So, what's wrong with iTunes? (or what more would you want?)
alaskamiller: Better video/media files support. It's such as hassle ripping my tv show or movies DVDs and getting it work with iTunes. The meta tags they do for tv seasons or movies don't even work that well. For example, trying to setup a 1 gig file with a movie poster always crashes iTunes for me and my tv shows can only be organized alphabetically.