Looking for a good music player/organizer

Right now I use windows media player 11, it's great.. but it doesn't support Ogg Vorbis(I have a plugin, it plays them but wont put them in the library). WinAmp does this, but it is also very unstable on my computer for some reason, it takes a long time to startup, and the music played through winamp sounds terrible on my 5.1 system for some reason, so i pretty much just use it for putting OGGs on my mp3 player. So is there a program out there that is better than WMP and winamp? Or is there a way to make WMP recognize Ogg and Mp4 files?