epiTUNES Is AJAX Powered
Just check out the recently launched epiTUNES next gen Web 2.0 music discovery site. This site offer a variety of tools for artists and labels to promote their music and fans can stay updated with the new music on the block. A variety of Web 2.0 features have been employed which includes RSS feeds, blogs, podcasts, Mashups, playlists, tagging, rankings and user generated reviews.
This site is AJAX powered and one can drag and drop AJAX driven plug ins in order to create web pages without any requirement of knowledge of HTML. You could either download the songs or listen to it and all depends upon the artist who gives the permission for this.
You could also create your profile with musical preferences and create custom songs play list, write music reviews, download free MP3s, preview music and a host of other activities but for all this you need to be a member on the site.