diff --git a/index.html b/index.html
index e95fe91..c5e2586 100644
--- a/index.html
+++ b/index.html
@@ -365,6 +365,38 @@
             padding: 4px;
         }
         
+        /* Begin Mapping Button */
+        .begin-mapping-btn {
+            width: 100%;
+            padding: 16px 24px;
+            margin-top: 20px;
+            background: linear-gradient(135deg, #28a745, #20c997);
+            color: white;
+            border: none;
+            border-radius: 8px;
+            font-size: 18px;
+            font-weight: bold;
+            cursor: pointer;
+            transition: all 0.3s ease;
+            box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
+        }
+        
+        .begin-mapping-btn:hover {
+            transform: translateY(-2px);
+            box-shadow: 0 6px 20px rgba(40, 167, 69, 0.5);
+        }
+        
+        .begin-mapping-btn:active {
+            transform: translateY(0);
+        }
+        
+        .begin-mapping-btn:disabled {
+            background: #555;
+            cursor: not-allowed;
+            transform: none;
+            box-shadow: none;
+        }
+        
         /* Floating Action Button */
         .floating-circle {
             position: fixed;
@@ -454,6 +486,8 @@
                     <p>Click "Select Directory" to start browsing media files.</p>
                 </div>
             </div>
+            
+            <button id="begin-mapping-btn" class="begin-mapping-btn">Begin Mapping</button>
         </div>
     </div>
 
diff --git a/main.js b/main.js
index c7dff73..6c359c7 100644
--- a/main.js
+++ b/main.js
@@ -275,6 +275,100 @@ ipcMain.handle('move-file-to-folder', async (event, { filePath, folderName }) =>
   }
 });
 
+// IPC handler for beginning the mapping process
+ipcMain.handle('begin-mapping', async (event, { directory, files, tvdbId }) => {
+  writeLog(`[BEGIN-MAPPING] Starting mapping for ${files.length} files in ${directory}`);
+  
+  try {
+    const fs = require('fs');
+    const path = require('path');
+    
+    // Get season folder name (direct parent of files)
+    const seasonFolder = path.basename(directory);
+    
+    // Get show folder (parent of season folder)
+    const showFolderPath = path.dirname(directory);
+    const showFolderName = path.basename(showFolderPath);
+    
+    // Extract season number from folder name (e.g., "Season 01" -> 1, "S01" -> 1)
+    const seasonMatch = seasonFolder.match(/(?:season\s*|s)(\d+)/i);
+    const seasonNumber = seasonMatch ? parseInt(seasonMatch[1]) : 1;
+    
+    writeLog(`[BEGIN-MAPPING] Show folder: ${showFolderName}, Season: ${seasonNumber}`);
+    
+    // Extract clean show name (without tvdbid bracket if present)
+    // Matches [tvdbid-XXXXX] or [tvdbid-series-XXXXX] formats
+    const showName = showFolderName.replace(/\s*\[tvdbid-[^\]]+\]/, '').trim();
+    
+    // Rename each file first (using original paths)
+    let successCount = 0;
+    let errorCount = 0;
+    
+    for (const file of files) {
+      try {
+        const oldPath = file.filePath;
+        const ext = path.extname(oldPath);
+        
+        // Format episode number with leading zero
+        const epNum = String(file.episodeNumber).padStart(2, '0');
+        const seasonNum = String(seasonNumber).padStart(2, '0');
+        
+        // Build new filename: "ShowName S01E01 - 1080p.ext"
+        let newFileName = `${showName} S${seasonNum}E${epNum}`;
+        if (file.quality && file.quality !== 'N/A' && file.quality !== '-') {
+          newFileName += ` - ${file.quality}`;
+        }
+        newFileName += ext;
+        
+        const newPath = path.join(path.dirname(oldPath), newFileName);
+        
+        // Skip if file already has the correct name
+        if (oldPath === newPath) {
+          writeLog(`[BEGIN-MAPPING] File already mapped: ${path.basename(oldPath)}`);
+          successCount++;
+          continue;
+        }
+        
+        // Check if target already exists
+        if (fs.existsSync(newPath)) {
+          writeLog(`[BEGIN-MAPPING] Target exists, skipping: ${newFileName}`);
+          errorCount++;
+          continue;
+        }
+        
+        fs.renameSync(oldPath, newPath);
+        writeLog(`[BEGIN-MAPPING] Renamed: ${path.basename(oldPath)} -> ${newFileName}`);
+        successCount++;
+      } catch (fileErr) {
+        writeLog(`[BEGIN-MAPPING] Error renaming file: ${fileErr.message}`);
+        errorCount++;
+      }
+    }
+    
+    // Now rename show folder at the end (if needed)
+    let newDirectory = directory;
+    if (tvdbId && !showFolderName.includes('[tvdbid-')) {
+      const newShowFolderName = `${showFolderName} [tvdbid-${tvdbId}]`;
+      const newShowFolderPath = path.join(path.dirname(showFolderPath), newShowFolderName);
+      
+      try {
+        fs.renameSync(showFolderPath, newShowFolderPath);
+        writeLog(`[BEGIN-MAPPING] Renamed show folder to: ${newShowFolderName}`);
+        newDirectory = path.join(newShowFolderPath, seasonFolder);
+        writeLog(`[BEGIN-MAPPING] New directory path: ${newDirectory}`);
+      } catch (renameErr) {
+        writeLog(`[BEGIN-MAPPING] Could not rename show folder: ${renameErr.message}`);
+      }
+    }
+    
+    writeLog(`[BEGIN-MAPPING] Complete. Success: ${successCount}, Errors: ${errorCount}`);
+    return { success: true, renamed: successCount, errors: errorCount, newDirectory: newDirectory };
+  } catch (error) {
+    writeLog(`[BEGIN-MAPPING] Critical error: ${error.message}`);
+    return { success: false, error: error.message };
+  }
+});
+
 // Function to test moving files (for debugging purposes)
 function testMoveFunction() {
   // This is for testing the function directly from main process
diff --git a/renderer.js b/renderer.js
index 0258d66..b47daf4 100644
--- a/renderer.js
+++ b/renderer.js
@@ -27,6 +27,9 @@ searchInput.addEventListener('input', debounce(searchShows, 300));
 // Add click handler for the floating circle (play button) to move all tagged files
 document.getElementById('tagged-circle').addEventListener('click', moveAllTaggedFiles);
 
+// Add click handler for Begin Mapping button
+document.getElementById('begin-mapping-btn').addEventListener('click', beginMapping);
+
 // Listen for scan progress updates from main process
 ipcRenderer.on('scan-progress', (event, { current, total, fileName }) => {
   updateProgress(current, total, fileName);
@@ -631,6 +634,72 @@ async function moveAllTaggedFiles() {
   }
 }
 
+// Function to begin mapping files to Jellyfin naming convention
+async function beginMapping() {
+  const btn = document.getElementById('begin-mapping-btn');
+  
+  // Get all media file items (not folders)
+  const fileItems = document.querySelectorAll('.file-item:not(.folder-item)');
+  
+  if (fileItems.length === 0) {
+    alert('No media files to map. Please select a directory first.');
+    return;
+  }
+  
+  if (!currentDirectory) {
+    alert('No directory selected.');
+    return;
+  }
+  
+  // Disable button during processing
+  btn.disabled = true;
+  btn.textContent = 'Mapping...';
+  
+  // Collect file data with episode numbers from UI order
+  const filesToMap = [];
+  fileItems.forEach((item, index) => {
+    const fileNameEl = item.querySelector('.file-name');
+    const qualityEl = item.querySelector('.file-quality');
+    const episodeNumEl = item.querySelector('.episode-number');
+    
+    if (fileNameEl && fileNameEl.dataset.filePath) {
+      filesToMap.push({
+        filePath: fileNameEl.dataset.filePath,
+        quality: qualityEl ? qualityEl.textContent : '',
+        episodeNumber: episodeNumEl ? parseInt(episodeNumEl.textContent) : (index + 1)
+      });
+    }
+  });
+  
+  // Get TVDB ID from current show if selected
+  const tvdbId = currentShow ? currentShow.id : null;
+  
+  try {
+    const result = await ipcRenderer.invoke('begin-mapping', {
+      directory: currentDirectory,
+      files: filesToMap,
+      tvdbId: tvdbId
+    });
+    
+    if (result.success) {
+      alert('Mapping Complete!');
+      // Update currentDirectory if it changed (show folder was renamed)
+      const newDir = result.newDirectory || currentDirectory;
+      currentDirectory = newDir;
+      // Refresh the file list to show new names
+      openDirectory(newDir);
+    } else {
+      alert('Mapping failed: ' + (result.error || 'Unknown error'));
+    }
+  } catch (error) {
+    console.error('Mapping error:', error);
+    alert('Mapping failed: ' + error.message);
+  } finally {
+    btn.disabled = false;
+    btn.textContent = 'Begin Mapping';
+  }
+}
+
 // Function to display created folders in UI
 function displayCreatedFolder(folderName) {
   // Check if folder entry already exists