Music and film downloads for iPods and other mp3 players. Pay per download or membership by subscription
Over 1 million music and video tracks available from classic to rock. Typical price 79p - 89p per music track but some cheaper. Albums from around £3
Music downloads for iPOD and other mp3 players. Two week free trial with no commitment. 25 free downloads, then monthly membership with downloads from around 20p
Over 6 million tracks at 79p, now available RDM free. 11,000 videos, TV shows from £1.89 and 100,000 free podcasts.
As well as renting DVDs, members can also download some film titles. 
Single tracks from 65p and albums from £4.99. Suitable for all MP3 players, including ipods
CDs and DVDs to buy
DVD rentals
25 free downloads
no commitment
then downloads
from 20p per track
Lady GaGa, Just Dance
70p
If you can't wait for a CD to arrive in the post, 7digital sell legal downloads of all kinds of music - classical, pop, even middle of the road. Their arrangements are traditional - you pay per download.
The biggest download site of all must be iTunes, with over 6 million tracks. You can also download TV shows, videos, podcasts and even games.
Another download option comes from emusic. They offer a two week free trial, during which you can download up to 25 tracks free of charge. There is no commitment. You can cancel your membership, keep the 25 tracks and pay nothing. If you want to carry on, you pay a monthly subscription. There are three plans: for £8.99 per month you can download 30 tracks; for £11.99 you can download 50 and for £14.99 per month you get 75 - equivalent to about 20p per track. Emusic have 2 million tracks from independent labels including classical music, jazz, pop, indie, punk and undiscovered new artists but not all the big chart names.
Lovefilm are better known for DVD rentals but you can download some (but not all) of their titles too.