diff --git a/MainWindow.xaml b/MainWindow.xaml
index 4451391..eb6cbd2 100644
--- a/MainWindow.xaml
+++ b/MainWindow.xaml
@@ -10,16 +10,12 @@
         <TabControl x:Name="MainTabControl">
             <TabItem Header="SRC-ARC">
                 <Grid Background="#FFE5E5E5">
-                    <Grid.ColumnDefinitions>
-                        <ColumnDefinition Width="99*"/>
-                        <ColumnDefinition Width="298*"/>
-                    </Grid.ColumnDefinitions>
-                    <Button Content="Clear List" HorizontalAlignment="Right" Height="22" Margin="0,190,10,0" VerticalAlignment="Top" Width="76" Click="CLEAR_FILES" Grid.Column="1"/>
-                    <Button Content="Verify Sizes" HorizontalAlignment="Right" Height="22" Margin="0,212,10,0" VerticalAlignment="Top" Width="76" Click="VERIFY_SIZES" Grid.Column="1"/>
-                    <Button Content="Export XML" HorizontalAlignment="Right" Height="22" Margin="0,234,10,0" VerticalAlignment="Top" Width="76" Click="EXPORT_LIST" Grid.Column="1"/>
-                    <Button Content="Import XML" HorizontalAlignment="Right" Height="22" Margin="0,256,10,0" VerticalAlignment="Top" Width="76" Click="IMPORT_LIST" Grid.Column="1"/>
-                    <Button Content="-> TapeCat" HorizontalAlignment="Right" Height="22" Margin="0,278,10,0" VerticalAlignment="Top" Width="76" Click="COPY_TO_TAPECATALOG" Grid.Column="1"/>
-                    <ListView x:Name="FilesListView" Margin="10,10,101,10" Grid.ColumnSpan="2">
+                    <Button Content="Clear List" HorizontalAlignment="Right" Height="22" Margin="0,10,10,0" VerticalAlignment="Top" Width="76" Click="CLEAR_FILES" />
+                    <Button Content="Verify Sizes" HorizontalAlignment="Right" Height="22" Margin="0,40,10,0" VerticalAlignment="Top" Width="76" Click="VERIFY_SIZES" />
+                    <Button Content="Export XML" HorizontalAlignment="Right" Height="22" Margin="0,70,10,0" VerticalAlignment="Top" Width="76" Click="EXPORT_LIST" />
+                    <Button Content="Import XML" HorizontalAlignment="Right" Height="22" Margin="0,100,10,0" VerticalAlignment="Top" Width="76" Click="IMPORT_LIST" />
+                    <Button Content="-> TapeCat" HorizontalAlignment="Right" Height="22" Margin="0,130,10,0" VerticalAlignment="Top" Width="76" Click="COPY_TO_TAPECATALOG" />
+                    <ListView x:Name="FilesListView" Margin="10,10,101,10" >
                         <ListView.View>
                             <GridView>
                                 <GridViewColumn Header="Filename" DisplayMemberBinding="{Binding Filename}" Width="300"/>
@@ -33,18 +29,14 @@
                             </GridView>
                         </ListView.View>
                     </ListView>
-
                 </Grid>
             </TabItem>
             <TabItem Header="Tapecatalog">
                 <Grid Background="#FFE5E5E5">
-                    <Grid.ColumnDefinitions>
-                        <ColumnDefinition Width="19*"/>
-                        <ColumnDefinition Width="775*"/>
-                    </Grid.ColumnDefinitions>
-                    <ComboBox x:Name="MediumComboBox" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="200" Grid.ColumnSpan="2"/>
-                    <Button Content="Refresh Mediums" HorizontalAlignment="Left" Height="22" Margin="199,10,0,0" VerticalAlignment="Top" Width="120" Click="REFRESH_MEDIUMS" Grid.Column="1"/>
-                    <Button Content="Copy from SRC-ARC" HorizontalAlignment="Left" Height="22" Margin="324,10,0,0" VerticalAlignment="Top" Width="120" Click="COPY_FROM_SRCARC" Grid.Column="1"/>
+                    <ComboBox x:Name="MediumComboBox" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="200" />
+                    <Button Content="Refresh Mediums" HorizontalAlignment="Left" Height="22" Margin="220,10,0,0" VerticalAlignment="Top" Width="120" Click="REFRESH_MEDIUMS" />
+                    <Button Content="Copy from SRC-ARC" HorizontalAlignment="Left" Height="22" Margin="350,10,0,0" VerticalAlignment="Top" Width="120" Click="COPY_FROM_SRCARC" />
+                    <Button Content="Export Medium" HorizontalAlignment="Left" Height="22" Margin="480,10,0,0" VerticalAlignment="Top" Width="120" Click="EXPORT_MEDIUM" />
                     <ListView x:Name="TapeCatalogListView" Margin="10,44,10,40" Grid.ColumnSpan="2">
                         <ListView.View>
                             <GridView>
@@ -54,66 +46,79 @@
                             </GridView>
                         </ListView.View>
                     </ListView>
-                    <Button Content="Export Medium" HorizontalAlignment="Left" Height="22" Margin="449,10,0,0" VerticalAlignment="Top" Width="120" Click="EXPORT_MEDIUM" Grid.Column="1"/>
                 </Grid>
             </TabItem>
             <TabItem Header="Copy">
                 <Grid Background="#FFE5E5E5">
-                    <Grid.ColumnDefinitions>
-                        <ColumnDefinition Width="102*"/>
-                        <ColumnDefinition Width="295*"/>
-                    </Grid.ColumnDefinitions>
                     <Button Content="Refresh Copy Tree" HorizontalAlignment="Left" Height="22" Margin="10,10,0,0" VerticalAlignment="Top" Width="140" Click="POPULATE_COPY_TREE"/>
-                    <Button Content="Copy Selected to Archive" HorizontalAlignment="Left" Height="22" Margin="160,10,0,0" VerticalAlignment="Top" Width="180" Click="COPY_SELECTED_TO_ARCHIVE" Grid.ColumnSpan="2"/>
-                    <StackPanel Orientation="Vertical" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="146,10,0,0" Grid.Column="1" Width="149">
+                    <Button Content="Copy Selected to Archive" HorizontalAlignment="Left" Height="22" Margin="160,10,0,0" VerticalAlignment="Top" Width="180" Click="COPY_SELECTED_TO_ARCHIVE" />
+                    <StackPanel Orientation="Vertical" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="370,10,0,0" Width="210">
                         <TextBlock Text="Selected files:"/>
                         <TextBlock x:Name="CopySelectedCountText" Text="0" Margin="0,2,0,6"/>
                         <TextBlock Text="Selected size (MB):"/>
                         <TextBlock x:Name="CopySelectedSizeText" Text="0.00" Margin="0,2,0,6"/>
                         <TextBlock Text="Archive free:"/>
                         <TextBlock x:Name="ArchiveFreeText" Text="-" Margin="0,2,0,6"/>
+                        <ProgressBar x:Name="CopyProgressBar" Width="200" Height="16" Minimum="0" Maximum="100" Value="0" Margin="0,6,0,0" />
+                        <TextBlock x:Name="CopyProgressText" Text="" Margin="0,2,0,0" />
                     </StackPanel>
                     <TreeView x:Name="CopyTreeView" Margin="10,170,10,10" Grid.ColumnSpan="2" />
                 </Grid>
             </TabItem>
             <TabItem Header="XML">
                 <Grid Background="#FFE5E5E5">
-                    <Grid.ColumnDefinitions>
-                        <ColumnDefinition Width="250"/>
-                        <ColumnDefinition Width="*"/>
-                    </Grid.ColumnDefinitions>
-                    <ListBox x:Name="XmlFilesListBox" Margin="4" SelectionChanged="XmlFilesListBox_SelectionChanged" />
-                    <ListView x:Name="XmlSummaryListView" Margin="4" Grid.Column="1">
+                    <ListBox x:Name="XmlFilesListBox" SelectionChanged="XmlFilesListBox_SelectionChanged" Width="200" Margin="10,10,590,10"/>
+                    <ListView x:Name="XmlSummaryListView" Width="570" Margin="220,10,4,0">
                         <ListView.View>
                             <GridView>
-                                <GridViewColumn Header="Filename" DisplayMemberBinding="{Binding Filename}" Width="250" />
-                                <GridViewColumn Header="FileDir" DisplayMemberBinding="{Binding FileDir}" Width="350" />
+                                <GridViewColumn Header="Filename" DisplayMemberBinding="{Binding Filename}" Width="200" />
+                                <GridViewColumn Header="FileDir" DisplayMemberBinding="{Binding FileDir}" Width="300" />
                                 <GridViewColumn Header="Status" DisplayMemberBinding="{Binding Status}" Width="100" />
                             </GridView>
                         </ListView.View>
                     </ListView>
                 </Grid>
             </TabItem>
-            <TabItem Header="Settings" Height="20" VerticalAlignment="Center" RenderTransformOrigin="0.104,0.652" HorizontalAlignment="Left" Width="55">
-                <Grid Background="#FFE5E5E5">
+            <TabItem Header="Settings">
+                <Grid Background="#FFE5E5E5" Margin="10,0,0,0">
+                    <Grid.RowDefinitions>
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="Auto" />
+                        <RowDefinition Height="*" />
+                    </Grid.RowDefinitions>
                     <Grid.ColumnDefinitions>
-                        <ColumnDefinition Width="0*"/>
-                        <ColumnDefinition Width="96*"/>
-                        <ColumnDefinition Width="301*"/>
+                        <ColumnDefinition Width="150" />
+                        <ColumnDefinition Width="*" />
+                        <ColumnDefinition Width="Auto" />
                     </Grid.ColumnDefinitions>
-                    <TextBlock Text="Application Settings" FontWeight="Bold" Margin="0,0,0,10" Grid.ColumnSpan="3" />
-                    <TextBox x:Name="SourceTextBox" HorizontalAlignment="Left" Height="20" Margin="0,40,0,0" TextWrapping="Wrap" Text="Source Directory" VerticalAlignment="Top" Width="510" Grid.ColumnSpan="3"/>
-                    <TextBox x:Name="ArchiveTextBox" HorizontalAlignment="Left" Height="20" Margin="0,80,0,0" TextWrapping="Wrap" Text="Archive Directory" VerticalAlignment="Top" Width="510" Grid.ColumnSpan="3"/>
-                    <TextBlock Text="XML Directory:" Height="20" Margin="0,100,101,0" VerticalAlignment="Top" Grid.ColumnSpan="3"/>
-                    <TextBlock Text="Source Directory:" Height="20" Margin="0,20,192,0" VerticalAlignment="Top" Grid.ColumnSpan="3"/>
-                    <TextBlock Text="Archive Directory:" Height="20" Margin="0,60,192,0" VerticalAlignment="Top" Grid.ColumnSpan="3"/>
-                    <TextBox x:Name="XmlDirectoryTextBox" HorizontalAlignment="Left" Height="20" Margin="0,120,0,0" TextWrapping="Wrap" Text="XML Directory" VerticalAlignment="Top" Width="510" Grid.ColumnSpan="3"/>
-                    <Button x:Name="XmlDirectorySelect" Content="Select Directory" HorizontalAlignment="Left" Margin="328,120,0,0" VerticalAlignment="Top" Height="20" Click="SET_XML_DIR" Grid.Column="2"/>
-                    <Button x:Name="SourceSelect" Content="Select Directory" HorizontalAlignment="Left" Margin="328,40,0,0" VerticalAlignment="Top" Height="20" Click="SET_RES_DIR" Grid.Column="2" Width="87"/>
-                    <Button x:Name="ArchiveSelect" Content="Select Directory" HorizontalAlignment="Left" Margin="328,80,0,0" VerticalAlignment="Top" Height="20" Click="SET_ARC_DIR" Grid.Column="2" Width="87"/>
-                    <Button Content="Scan Source" HorizontalAlignment="Left" Height="22" Margin="10,160,0,0" VerticalAlignment="Top" Width="120" Click="SCAN_RES_DIR" Grid.Column="1"/>
-                    <Button Content="Scan Archive" HorizontalAlignment="Left" Height="22" Margin="10,182,0,0" VerticalAlignment="Top" Width="120" Click="SCAN_ARC_DIR" Grid.Column="1"/>
-                    <Button Content="Load XML Files" HorizontalAlignment="Left" Height="22" Margin="10,204,0,0" VerticalAlignment="Top" Width="120" Click="LOAD_XML_FILES" Grid.Column="1"/>
+
+                    <TextBlock Text="Application Settings" FontWeight="Bold" Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="3" Margin="6" />
+
+                    <TextBlock Text="Source Directory:" Grid.Row="1" Grid.Column="0" VerticalAlignment="Center" Margin="6" />
+                    <TextBox x:Name="SourceTextBox" Grid.Row="1" Grid.Column="1" Height="22" Margin="6" Text="Source Directory" />
+                    <Button x:Name="SourceSelect" Content="Select Directory" Grid.Row="1" Grid.Column="2" Click="SET_RES_DIR" Margin="6" Height="22" />
+
+                    <TextBlock Text="Archive Directory:" Grid.Row="2" Grid.Column="0" VerticalAlignment="Center" Margin="6" />
+                    <TextBox x:Name="ArchiveTextBox" Grid.Row="2" Grid.Column="1" Height="22" Margin="6" Text="Archive Directory" />
+                    <Button x:Name="ArchiveSelect" Content="Select Directory" Grid.Row="2" Grid.Column="2" Click="SET_ARC_DIR" Margin="6" Height="22" />
+
+                    <TextBlock Text="XML Directory:" Grid.Row="3" Grid.Column="0" VerticalAlignment="Center" Margin="6" />
+                    <TextBox x:Name="XmlDirectoryTextBox" Grid.Row="3" Grid.Column="1" Height="22" Margin="6" Text="XML Directory" />
+                    <Button x:Name="XmlDirectorySelect" Content="Select Directory" Grid.Row="3" Grid.Column="2" Click="SET_XML_DIR" Margin="6" Height="22" />
+
+                    <TextBlock Text="Copy speed (MB/s):" Grid.Row="4" Grid.Column="0" VerticalAlignment="Center" Margin="6" />
+                    <TextBox x:Name="CopySpeedTextBox" Grid.Row="4" Grid.Column="1" Height="22" Margin="6" Text="0" />
+
+                    <StackPanel Orientation="Horizontal" Grid.Row="5" Grid.Column="1" Margin="6">
+                        <Button Content="Scan Source" Click="SCAN_RES_DIR" Margin="0,0,6,0" Height="24" />
+                        <Button Content="Scan Archive" Click="SCAN_ARC_DIR" Margin="0,0,6,0" Height="24" />
+                        <Button Content="Load XML Files" Click="LOAD_XML_FILES" Height="24" />
+                    </StackPanel>
+
                 </Grid>
             </TabItem>
 
diff --git a/MainWindow.xaml.cs b/MainWindow.xaml.cs
index 4fc5374..5d26e99 100644
--- a/MainWindow.xaml.cs
+++ b/MainWindow.xaml.cs
@@ -17,6 +17,9 @@ using System.IO;
 using XML;
 using TapeCatalog.Methods;
 using System.Windows.Threading;
+using System.Diagnostics;
+using System.Threading;
+using System.Globalization;
 
 
 
@@ -360,7 +363,7 @@ namespace TapeCatalog
             Copy.PopulateTree(CopyTreeView, SourceTextBox.Text);
         }
 
-        private void COPY_SELECTED_TO_ARCHIVE(object sender, RoutedEventArgs e)
+        private async void COPY_SELECTED_TO_ARCHIVE(object sender, RoutedEventArgs e)
         {
             var archivePath = ArchiveTextBox.Text?.Trim();
             if (string.IsNullOrWhiteSpace(archivePath) || !Directory.Exists(archivePath))
@@ -376,8 +379,104 @@ namespace TapeCatalog
                 return;
             }
 
-            var result = Copy.CopySelectedToArchive(CopyTreeView, sourceRoot, archivePath);
-            MessageBox.Show(this, $"Copy finished. Success: {result.Item1}, Failed: {result.Item2}", "Copy completed", MessageBoxButton.OK, MessageBoxImage.Information);
+            var files = Copy.GetCheckedFiles(CopyTreeView);
+            if (files.Count == 0)
+            {
+                MessageBox.Show(this, "No files selected.", "Nothing to copy", MessageBoxButton.OK, MessageBoxImage.Information);
+                return;
+            }
+
+            // prepare progress UI based on bytes
+            long totalBytes = 0;
+            foreach (var f in files)
+            {
+                try { totalBytes += new FileInfo(f).Length; } catch { }
+            }
+
+            if (totalBytes <= 0) totalBytes = 1; // avoid zero maximum
+
+            CopyProgressBar.Minimum = 0;
+            CopyProgressBar.Maximum = (double)totalBytes;
+            CopyProgressBar.Value = 0;
+            CopyProgressText.Text = "Starting...";
+
+            long bytesCopied = 0;
+            int copied = 0, failed = 0;
+
+            // parse speed limit (MB/s) from settings; 0 or invalid = unlimited
+            double speedMb = 0;
+            var speedText = CopySpeedTextBox?.Text?.Trim();
+            if (!string.IsNullOrWhiteSpace(speedText))
+                double.TryParse(speedText, NumberStyles.Float, CultureInfo.InvariantCulture, out speedMb);
+
+            double speedBytesPerSec = speedMb > 0 ? speedMb * 1024.0 * 1024.0 : 0;
+
+            await Task.Run(() =>
+            {
+                const int bufferSize = 64 * 1024; // 64KB
+                var buffer = new byte[bufferSize];
+
+                for (int i = 0; i < files.Count; i++)
+                {
+                    var src = files[i];
+                    try
+                    {
+                        var fileDir = System.IO.Path.GetDirectoryName(src) ?? string.Empty;
+                        string relative;
+                        if (!string.IsNullOrWhiteSpace(sourceRoot) && fileDir.StartsWith(sourceRoot, StringComparison.OrdinalIgnoreCase))
+                            relative = fileDir.Substring(sourceRoot.Length).TrimStart(System.IO.Path.DirectorySeparatorChar, System.IO.Path.AltDirectorySeparatorChar);
+                        else
+                            relative = System.IO.Path.GetFileName(fileDir);
+
+                        var destDir = System.IO.Path.Combine(archivePath, relative);
+                        Directory.CreateDirectory(destDir);
+                        var destFile = System.IO.Path.Combine(destDir, System.IO.Path.GetFileName(src));
+
+                        using (var inStream = new FileStream(src, FileMode.Open, FileAccess.Read, FileShare.Read))
+                        using (var outStream = new FileStream(destFile, FileMode.Create, FileAccess.Write, FileShare.None))
+                        {
+                            long fileBytesCopied = 0;
+                            var sw = Stopwatch.StartNew();
+                            int read;
+                            while ((read = inStream.Read(buffer, 0, buffer.Length)) > 0)
+                            {
+                                outStream.Write(buffer, 0, read);
+                                fileBytesCopied += read;
+                                Interlocked.Add(ref bytesCopied, read);
+
+                                // throttling per file
+                                if (speedBytesPerSec > 0)
+                                {
+                                    double desiredMs = (fileBytesCopied / speedBytesPerSec) * 1000.0;
+                                    double actualMs = sw.Elapsed.TotalMilliseconds;
+                                    if (desiredMs > actualMs)
+                                    {
+                                        int sleep = (int)Math.Ceiling(desiredMs - actualMs);
+                                        if (sleep > 0) Thread.Sleep(sleep);
+                                    }
+                                }
+
+                                // update UI progress
+                                Dispatcher.Invoke(() =>
+                                {
+                                    CopyProgressBar.Value = Math.Min((double)bytesCopied, CopyProgressBar.Maximum);
+                                    double pct = (CopyProgressBar.Value / CopyProgressBar.Maximum) * 100.0;
+                                    CopyProgressText.Text = $"{FormatBytes(bytesCopied)} / {FormatBytes(totalBytes)} ({pct:F1}%)";
+                                });
+                            }
+                        }
+
+                        copied++;
+                    }
+                    catch
+                    {
+                        failed++;
+                    }
+                }
+            });
+
+            CopyProgressText.Text = $"Done. Success: {copied}, Failed: {failed}. {FormatBytes(bytesCopied)} copied.";
+            MessageBox.Show(this, $"Copy finished. Success: {copied}, Failed: {failed}", "Copy completed", MessageBoxButton.OK, MessageBoxImage.Information);
         }
 
         private void UpdateCopySummary()
@@ -435,6 +534,12 @@ namespace TapeCatalog
                 // swallow periodic update errors; avoid UI disruptions
             }
         }
+
+        private static string FormatBytes(long bytes)
+        {
+            double mb = bytes / 1024.0 / 1024.0;
+            return mb.ToString("F2") + " MB";
+        }
     }
     #endregion (VERIFY_SIZES)
     public class FileEntry : System.ComponentModel.INotifyPropertyChanged