A company called Infinite Range is working on a special Bluetooth add-on for MP3 players called RangeScan that’ll let you wirelessly transmit audio to a stereo. The only problem is that right now all it does is take the analog audio signal from the players headphones jack, convert into a digital stream, and then decode them back into an analog signal at the receiver, which makes something like this only slightly more useful than an FM transmitter add-on like the iTrip. There are definitely some practical uses for having wireless networking built-into an MP3 player — like swapping files with friends or wirelessly synching with a computer — but Bluetooth is too slow to be off much use for those purposes. What we want Apple to do is to put AirPort Extreme into the next iPod.
