The Amazing Slowdowner
The Amazing Slowdowner is an audio tool for changing the speed and/or pitch of a recording. Most people use the Amazing Slowdowner to help learn songs by slowing them down, but the tool is also a great for testing your own tunes at different tempos. we like this app a lot. http://www.ronitmusic.com

Bob Sellon: Update 11-24-2007: I recently upgraded my developement PC to a Vista system and have encountered problems with The Amazing Slowdowner. This is an older version of the app (V2.81) but I contacted RoniMusic to see if they could provide any suggestions on how to get this version working. Their reply was that I need to upgrade to the tune of about $30. I'm a little hesitant to bite since they are clearly only providing limited support and the feature set is rather limited even for the original price.

Background image by Pauline Moss. at http://paulinemoss.deviantart.com/art/Stars-307119758