More shops beside iTunes and Finetunes:

http://www.emusic.com

http://www.rhapsody.com

http://clubsmart.popjoy.de

https://www.beatport.com

http://www.akuma.de

http://free.napster.com

http://www.vinyl-distribution.nl

http://www.audiolunchbox.com
http://www-fr.fnacmedia.be

http://mp3.de

http://www.musicbrigade.com

http://www.musicload.de

http://www.starzik.com

http://wippit.com

http://search.music.yahoo.com

http://music.o2online.de
iTunes / iPod / AAC / m4a
Finetunes / all players / MP3
iTunes / iPod / AAC / m4a
Finetunes / all players / MP3