GUI:
* adapt to taller panels
* adapt to vertical panels
* look at code for cd player applet for adaptation example
* auto-expand to take up available space?

Moosic:
* allow specifying which server to connect to
* loop mode toggle menu item in right click menu
* playlist editing (or maybe just launch Daniel's moosic GUI?)
* if the queue is empty and no song is currently playing, the
  play/pause button should change to a plus sign, and clicking
  it should allow adding items to the queue (just use the GTK
  file selector dialog)

Development:
* make adding configuration options easier
  (like it is easy to add buttons & menu entries)
