I can give you some feature examples Radiotracker has:
1. big wishlist - 80.000 artists, 77 music genres, over 13,000 internet radio stations
2. ID3-tag editor, cover artwork, lyrics
3. live listening with integrated player
4. unlimited parallel station ripping
5. fading and normalisation
6. ringtone generator (i like this part)
If you want to read more on it:
http://all-streaming-media.com/recor...ilar-music.htm
Have fun!
