Great info.
Here's a couple I've downloaded recently. Apologies if they've already been mentioned.
SLOW YOUR CD DOWN
Window Media player latest version can often slow music tracks down and also rip from the Cd onto the hard drive. Very handy for trying to figure out those Cds that come with Teach Yourself books, or any music for that matter. But it doesn't seem very flexible. So here are some more options.
Best Practice. Very simple to use. Slow the track down and change pitch if needed. Also loop the bits you most want to practice.
Best Practice
Winamp. Music player that has numerous plugins that with allow you to loop, slow down, change pitch etc.
Winamp
Looping plugin
Slow down and Pitch Change Plugin for Winamp
This one was suggested on the 'Blues You Can Use forum, but some people had trouble with the pitch slider. There are several other plugins that do that job too though, including Take_it Easy and Slow Me Down.
Take it easy Plugin for Winamp
Slow me down Plugin for Winamp
And of course, everybody loves Audacity. Hugely popular for making tracks at home:
Audacity - Free audio editor and recorder
Cheers,
Chris