Program for naming music files

What are some good programs that will automaticaly name/rename and sort them. I know windows media player 11 does but 3/4 time it does nothing but sit there and say server is busy.

thx

Tag&Rename is what I use.

MediaMonkey (non-registered) is also pretty decent (tag from Amazon/filename FTW), and has a bunch of plugins that you can find on the forums (some are hard to find, however) that can do more stuff then the default options (ie, renumber tracks). However, it is a library-type application as well, if you are put off by those things.

ID3Tagit is another that is standalone - this tags from FreeDB and filename as well.

thanks, im going to try all three