MPlayer is very popular in windows. It is capable of playing mpeg4, h.264, wmv, mp3, aac, wma, real media, and t-dmb formats. This player has been ported to iPhone. Now you don’t need to convert your favorite video, audio to iPhone compatible formats e.g. mp4, mp3.
You can place any media file in /private/var/media directory and these files will be available for MPlayer.To put files in this directory, you can use WinSCP. MPlayer makes iPhone’s media capability very rich. This is must software for iPhone.
It is available in Cydia installer under ModMyI.com source.

Related posts:

1. Installing MPlayer on iPhone
2. Convert movies to iPhone compatible format
3. Enabling Edge in firmware 2.0.X
4. Connecting WinSCP to iPhone
5. vlc4iphone – Media and streaming radio player