We’re one step closer to getting a native Internet radio application for our iPhones. TUAW’s prolific iPhone developer, Erica Sadun, says that her PlayAudio app for the iPhone will play internet-based music through a URL in the command line terminal. Apparently, the Celestial iPhone framework on the iPhone is basically a repackaged Quicktime. So, in one of those classic accidents that turn into pleasant discoveries, Erica decided to try and play an online music file by entering the URL of the file as opposed to the location of a local audio file.

When she typed in the URL of the file into the command line:
playaudio http://steiner.math.nthu.edu.tw/ne01/tjy/music/06.I%20Just%20Called%20To%20Say%20I%20Love%20You.mp3
She was pleasantly surprised to hear the music coming through the iPhone’s external speakers.

Internet radio, audio streaming, or playing .pls files are still a no-go, but we’re confident that someone will figure out how to get those working. Props to Ms. Sadun for her great work!

[Via: TUAW]

No, we haven’t uncovered some secret Bluetooth A2DP feature on the iPhone, but we do have confirmation that the iPhone will play audio through your Bluetooth headset! It works, but it’s not the best solution for getting music on your headset - it’s only mono (as headsets tend to only be worn on a single ear) and the audio is also played through the iPhone’s external speakers.

We can only imagine that Apple is thinking about enabling some sort of Bluetooth audio feature for headsets, or even planning to introduce exclusive iPhone Bluetooth Headphones (that would be sooo like Apple, wouldn’t it?). For the time being, you can play the mono music through your existing Bluetooth headset with a simple little change in your audio output options:
1) Pair your Bluetooth headset with your iPhone - we’re not gonna get into the specifics, just do it.
2) Go to your Visual Voicemail and hit the “Audio” button (when the iPhone is not paired with a headset, this button will say “Speaker.”
3) Choose your headset in the subsequent audio selection dialog.
4) Get to your homescreen and hit the iPod icon.
5) Start playing a song and revel in the Bluetooth music goodness! (oh, but also remember that those around you will also have to hear your music, so just keep that in mind and be polite, ok?)