iTunes Music Store: The UK's most popular download store offers 3m tracks, which cost 79p each.
Napster: WMA track downloads for 79p and subscriptions for £14.95 a month.
HMV Digital/Virgin Digital: WMA tracks cost 79p, subscriptions £14.99 a month.
www.hmv.co.uk/digital www.virgindigital.co.uk
eMusic: Sells MP3s from independent labels to subscribers for £8.99 a month.
Wippit: Offers a choice of downloads from 29p to 99p and a subscription service for £4.99 a month.
TuneTribe: A combination of major and independent label tracks from 79p.
Bleep: Specialists in electronic and independent music, selling high quality MP3s for 99p or £6.99 an album.
DJ Download: Dance music specialist selling high quality MP3s for either £1.49 (192 kbps) or £1.99 (320 kbps).
BreakMyEars: Independent metal, hardcore and punk. MP3s cost 76p and a subscription service is £5.99 a month.
Classical: Jazz, classical and world music. Subscription is £7.99 a month.
