Best: Slacker Radio
If you're not already a fan of the Slacker Internet radio site, this free BlackBerry [[xref:http://www.pcworld.com/article/164929/best_mobile_entertainment_apps_for_your_smartphone.html|mobile entertainment app|Best Mobile Entertainment Apps for Your Smartphone]] might easily turn you into one. Choose from a slew of preset channels (current hits, classic rock, alternative rock, and so on), or create your own channel based on an artist or song you like, and then listen. The BlackBerry app also shows you album art for the current track, as well as the name of the track that’s coming next. On an exit screen, Slacker tries to persuade you to update to its paid service, but that's a small annoyance for a great free service.