Music player with additional features

I am currently using Winamp for playing my mp3 collection.
I am wondering what others are using.

I have shitload of songs, but some are really bad. So, deleting is a good option (but it is very time-consuming to go see where some song is located, going to that directory and deleting it), but i would rather like to somehow tag songs i don't like so they wouldn't be played anymore (and tag songs i really love on the other hand).

So in this thread i am expecting to see how others are playing+organising their song colleciton.

foobar.  really, foobar is what you need.