diff --git a/server/lib/file_list.rb b/server/lib/file_list.rb
index 6409358..8e5b25e 100644
--- a/server/lib/file_list.rb
+++ b/server/lib/file_list.rb
@@ -1,6 +1,6 @@
 class FileList 
   
-  FILE_EXTENSIONS=[".prg",".pg2"]
+  FILE_EXTENSIONS=[".prg",".pg2",".d64",".sid"]
 
   def initialize(dir)
     log_msg("building file list for #{dir}")