5 ways to listen to music on the iPhone without using iTunes

One of the major functions of the iPhone and iPod touch is, of course, music playback. The iTunes app has been designed in such a way to take advantage of the iPhone's touchscreen. But what if you want to listen to music that doesn't reside in your iTunes library, or you want to discover new music while not sitting in front of a computer?

Thanks to the incredible success of the App Store, there are plenty of ways now to access streaming music even when you don't have the files. Not everyone knows what options are available, though—either that, or there are so many options that sifting through everything can be tedious. For these reasons, we are offering the top five ways we here at Ars like listening to music on the iPhone without using iTunes.