Quoting from 9to5mac where I found it:
Quote:
Amazon.com offers 1,290 individual MP3 song downloads for free. Notable artists include Jars of Clay, Tori Amos, Los Straitjackets, The Streets, and many other artists you may or may not have heard of. Amazon.com MP3 Downloader is required.

The jazz selection isn't very exciting, although there is an "Amazon Comedy Sampler" album, gratis, which includes a nice riff of Craig Furguson ripping on Sean Connery.