Media Players

I haven't installed a new media player on my reformatted macbook yet...Should I go with winamp like I have been for the last decade, or am I missing out on any sweet other programs?

My only real beef with winamp is its awful shuffle (repeats the same song quite often).

A good library system would be cool I guess but isn't really necessary since I organize all my music in explorer anyways.

Speaking of which, is there any good batch renaming/retagging freeware out there?