diff --git a/js/interface_common.js b/js/interface_common.js
index d6dfe32..1039600 100644
--- a/js/interface_common.js
+++ b/js/interface_common.js
@@ -978,6 +978,11 @@ function startTorrentDownloadAndPreview(torrentId, previewContainer, isMedia) {
 }
 
 function webtorrentFilePreview(file, previewContainer, isMedia) {
+    if (!isMedia) {
+        // try guessing by filename extension
+        isMedia = /^[^?]+\.(?:jpe?g|gif|png|mp4|webm|mp3|ogg|wav|)$/i.test(file.name)
+    }
+    
     if (isMedia) {
         var imagePreview = $('<div class="image-preview" />');
         previewContainer.append(imagePreview);