This is the Demo Disk compiled by ErinH (DIYMA). A must for SQ people.
There are 36 total, with the average track time being about 2 minutes. So, long enough to get in to it, but not long enough to bore you.
Grab the Disc while the link is hot.
http://bit.ly/Pkjtd5
Here's a screen shot of the tracks as well:

The file is a .rar which can be extracted via winzip/winrar. All files are in .flac format. There is an accompanying excel file with all the track names as well as dynamic range information (if you care).
These are from 'the good versions' of CDs. Namely, not crappy remasters with the dynamic range squashed down all to bits. That's more apparent in the Tears for Fears songs (mobile fidelity sound labs version of Songs From The Big Chair and then the West German 1983 pressing of The Hurting). Also, the Dire Straits track is from the MoFi release as well.