Dreamcast Media Center (DCMC) is a media player application for Dreamcast by PH3NOM.

Video formats supported:
– LibXviD (. avi)
– Libmpeg2 (.m1v/.m2v)

Audio formats supported:
– Libmpg123 (.mp2/.mp3)
– LibOGGVorbis (. ogg)
– Libfaad (.mp4/.m4a/.aac)
– Liba52 (. ac3)
– Leer listas de reproducción (.m3u/.pls)

Picture formats supported (up to 1024×512):
– JPG
– PNG

Thanks to http://www.dreamcast.es/news.php?readmore=483 for the news.

http://www.dcemulation.org/phpBB/viewtopic.php?f=34&t=101213