I have almost a ready package, i just now need a fine short description.
How about:
simple audio player with detachable GUI
It's not perfect, I know. This sounds pretty nifty, actually, but hard to categorize.
But this still doesn't sound quite right, and doesn't mention the second
advantage, which is a bit difficult to express in a simple phrase
anyway.
The other thing to remember is that the short description is just a hook. It doesn't have to mention every distinguishing feature of the package, or else xemacs would never have been uploaded. :) Just attempt something catchy (which my contribution isn't, really), and leave the full description for the appropriate section.
-=Eric (xemacs user, BTW)