Beatport is the recognized leader of electronic music downloads by DJs and fans alike delivering content in premium-encoded formats that match the professional performance quality standards of the world’s leading sound systems. Beatport.com allows users to access the world of club music through secure, legal, hi-speed, high quality downloads in MP3, MP4 and WAV formats on a pay per download basis from an impressive library of the world’s leading independent labels.
They’ve also got a podcast chock full of music (apparently) called “beatport burners” searchable on iTunes (though I couldn’t get any of the podcasts). Big thanks to Choxigurl for the heads up!
Also see Beatportal, their electronic music/DJ enthusiast community site.