Index: st2.py
==================================================================
--- st2.py
+++ st2.py
@@ -344,11 +344,11 @@
         default_fn = row["title"] + ".m3u"
         fn = uikit.save_file("Save Stream", None, default_fn, [(".m3u","*m3u"),(".pls","*pls"),(".xspf","*xspf"),(".jspf","*jspf"),(".smil","*smil"),(".asx","*asx"),("all files","*")])
         if fn:
             source = row.get("listformat", self.channel().listformat)
             dest = (re.findall("\.(m3u|pls|xspf|jspf|json|smil|asx|wpl)8?$", fn) or ["pls"])[0]
-            action.save_playlist(source=source, multiply=True).save(rows=[row], fn=fn, dest=dest)
+            action.save_playlist(source=source, multiply=True).file(rows=[row], fn=fn, dest=dest)
         pass
 
     # Save current stream URL into clipboard
     def menu_copy(self, w):
         gtk.clipboard_get().set_text(self.selected("url"))

Index: uikit.py
==================================================================
--- uikit.py
+++ uikit.py
@@ -377,18 +377,32 @@
         for fname,ftype in formats:
             f = gtk.FileFilter()
             f.set_name(fname)
             f.add_pattern(ftype)
             c.add_filter(f)
+        # Yes, that's how to retrieve signals for changed filter selections
+        try:
+            filterbox = c.get_children()[0].get_children()[0]
+            filterbox.connect("notify::filter", lambda *w: uikit.save_file_filterchange(c))
+        except: pass
         
         # Filter handlers don't work either.
 
         # Display and wait
         if c.run():
             fn = c.get_filename()  # return filaname
         c.destroy()
         return fn
+
+    # Callback for changed FileFilter, updates current filename extension
+    @staticmethod
+    def save_file_filterchange(c):
+        fn, ext = c.get_filename(), c.get_filter().get_name()
+        if fn and ext:
+            fn = os.path.basename(fn)
+            c.set_current_name(re.sub(r"\.(m3u|pls|xspf|jspf|asx|json|smil|wpl)$", ext, fn))
+        
     
     
     
     # pass updates from another thread, ensures that it is called just once
     @staticmethod