finding music files

Can any of you suggest a way for me to find all my music files that I have
copied onto my hard drive?
I seem to have 2 separate Windows Media Players programs, as well as trial
music software that came with the computer- Musicmatch, Realplayer...) and
downloaded songs. They are all over my computer and hard to find. I would
like to gather them all up and put them into ONE WMP program.

I have done a search on my computer for my mp3 files, but I don't know how
to search for songs from my CDs, as I dont know the file extentions. If I do
a search for ALL music, I get windows rings, bleeps , tones, and any other
sound files.
I just want the MUSIC files.

While Im asking for help, how do I delete a program that is not found in the
"Change or Remove Programs" in the Control Panel?

Thank you so very much for your help!