To find Internet radio stations, go to SHOUTcast, which has a great list of URLs that you can search by genre. There were more than 10,000 broadcasts in SHOUTcast’s showcase at the time of writing. You can get to SHOUTcast from your Treo, but I prefer to find radio stations that I like by using my desktop computer’s web browser, jot down the URL, and then type that URL into Pocket Tunes on my Treo, which tends to be a much faster process.
Be Your Own Deejay
Can’t find an Internet radio station to your liking? You can opt to become your own deejay and listen to your own broadcasts from your home computer via your Treo. Learn more in my article "Become an Internationally Acclaimed Deejay with Winamp andSHOUTcast." Since you might not be near your Treo and your desktop computer at the same time, I suggest loading a playlist on your desktop computer and listening to the playlist remotely via your Treo.
Play Stored Music
In addition to playing Internet radio, Pocket Tunes can play MP3 and WMA files, as well as some other audio formats. If you have a Treo 650, RealPlayer for Palm OS, which ships with the device, can play MP3s innately; however, it can’t play WMA files. The Treo 600, on the other hand, doesn’t ship with any software to play digital music such as MP3s and WMA files, so consider using Pocket Tunes to play stored digital music as well as Internet radio.