Feel free to suggest players other than generic players comming with the OS you are using.
Please only suggest free players or players with 30 day and more trials.
[Audio Players]
Dos:
Nullsoft DOSamp
Windows:
Winamp (Recommended)
Foobar2000 (Recommended)
Rhapsody (Plays .RA "RealAudio" files)
dBPowerAMP
Quintessential Player
Linux:
XMMS (Recommended)
AlsaPlayer
[Video Players]
Windows:
Media Player Classic (Recommended)
Mplayer (Command line version only) (Recommended)
VideoLAN (Recommended)
QuickTime (Plays .MOV files)
RealPlayer (Plays .RM "RealMovie" files)
BSplayer
DivX Player
The Core
Linux:
Xine (Recommended)
Totem (Recommended)
Mplayer (GUI and cmd line available)
LAMP
Mac:
MplayerOSX
[Codec/Player(s) packages]
[Audio]
Windows:
K-Lite Mega Codec Pack
[Video]
Additional codec pack for MPlayer (Player not included)
Update: Fixed (sp?) MPlayer error.