Examples of  Sound Files from Levitin & Menon (2003)
Beethoven Unscrambled mp3 aiff Beethoven Scrambled mp3 aiff
Fur Elise Unscrambled mp3 aiff Fur Elise Scrambled mp3 aiff

*aiff files are medium bandwith, mp3 are compressed for those with low bandwith connections.  The actual samples used in the experiment were at a significantly higer audio quality.