http://itunes.apple.com/us/app/free-internet-radio-for-ipad/id424515350?mt=8 BA.net free Internet Radio
free Internet Radio for iPad - BA.net
Including SOMA FM San Francisco. Trance, Dance, Groove Salad, Street Lounge, Beat Blender, Space Station, Cliq Hop, Drone Zone, Monkey Radio Groove, Frisky Radio, and many more!
Small app footprint, many hours of fun.
App store link iPhone (from browser)
App store link iPad (from browser)
For other countries search the app store for banet radio