- Make the songlist widget adjust it's scrollbar according to the # of
  entries in the list (change to gtk_clist?)
- Perhaps start integrating decoder functionality right into Gmp3?  This
  has the possibility of allowing a graphic equilizer, visualization effects
  and a host of other features (including plugins).  This would require a
  major rewrite of the control_funcs code, though.  OTOH I would probably
  end up using someone else's decoder code, and I don't know if mpg123's 
  license is compatible with the GPL.
- Support of other music formats.  Perhaps MOD, S3M, etc, using MikMod
  (now that it's free, and assuming it's GPL'd).
- Suggestions?