TODO - Scott Grayban <sgrayban@borgnet.us>

 * Still need to write in a command line function so that users can use any
   player they wish and remove the built-in player functions.

 * Need to fix the tray icon to detect desktop gui's that don't support it.
   either by allowing the user to hide it or disable it.

 * (FIXED)Need to add "Hide window" in the tray icon menu

 * (FIXED)Need to allow double click on tray icon to also hide window
   - right now it only opens the hidden window

 * (FIXED)Need to fix the error "Can't determine free disk space."
   - disk space can be determined by quota, du and/or df.

   Example of df output:
   # df `pwd`
   Filesystem            Size  Used Avail Use% Mounted on
   /dev/ide/host0/bus0/target0/lun0/part7
                          14G   13G  1.4G  91% /home

   Example of quota output:
   Disk quotas for user sgrayban (uid 501): none
   
   Example of du output:
   # du -shc ~/iPodderData/
   144K    /home/sgrayban/iPodderData/
   144K    total

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We added XMMS support but my goal is to make a preference setting
 that will let the linux user choose any player they want and let iPodder
 output the path to where the file is.
-----

 * Need to add mplayer to the list of players for the linux platform.
   - gmplayer /path/to/podcast-file
   - gmplayer -playlist /path/to/podcast-playlist
