There's a free(?) Winamp plugin for A-B repeat. I forgot the name. Musician's CDPlayer is shareware, but usable in trial mode. You can slow down the tempo while maintaining the pitch. Go here for download. There are some alternatives too: http://www.hitsquad.com/smm/win95/CD_PLAYERS/
I mostly just want to slow down passages. What are the limitations on the trial version of musician cdplayer? Right now I have a demo of SlowGold, but it only lets you do the first 2 tracks of a cd, and registering costs $50! Also if anyone knows of some musician software for Linux that would be cool to, so that I don't have to reboot to winblows to run it. Thanks for the help, I'll check out that URL.