Google moodio.fm. I have the moodio page bookmarked in my browser. You can select "your" stations and they will show up on the page on your BlackBerry when you log in.
You can also download iheartradio, which has real radio stations. Then there are Pandora and Slacker (apps to download) which are internet radio and not necessarily stations you would hear on your FM radio. All of these are free.