I just have to add to the Doctor's post that dispite
them being mostly commercial they do provide some free stuff in mp3. What is much more important here is that they were (and still are?) the first and only site to legally offer
not only HQ MP3's, but also WMA, AAC, MPC, OGG and full videos! (The advanced formats are only available through Online Encoding service) Just imagine, all that in a very convenient and affordable way -- only $0,01 per MB, all major CC's are accepted, PayPal and other payment options. They now have more than 10 000 albums of more than 3000 artists online! Besides, the unique online encoding mode gives user a freedom to choose the desired codec and essential encoding options: Lame MP3 (cbr/abr/alt-presets), WMA 7/8/9 (cbr/vbr/q-based), OGG (managed br/q-based), PsyTEL (?) AAC (cbr/vbr-presets) and MusePack (presets only). UI is available in both Russian and English.
They've been in business for more than 2 years now and IMO provide quite a professional, flexible and high quality service. So please don't be scared, they're not hackers/carders or something.
regards,
happy user