Heres some media players to play your music and videos on....
Media Player Classic (with K-lite Codec Pack) - Every media format you'll ever want and lot's and lot's of features you can also change the players background picture.
Media Player Classic download page - FileHippo
Combined Comunity Codec Pack - The program i use Media Player Classic slightly tuned for anime and Zoom Player packaged in too.
Combined Comunity Codec Pack download page - CCCP-Project
VLC - very reliable and easy to use can take screen caps too.
VLC Download page - FileHippo
If they don't take your fancy....
Lots more players - FileHippo
