No, Apple would never allow you to send/receive music, data via bluetooth, just to avoid shattering its music business. But the latest jailbreak hack lets you take full control over Bluetooth file transfer profile.
Celeste allows iPhone, iPad and iPod touch users to send and receive files via Bluetooth from just about any handset, or PC/Mac. PReviously, iBluenova did it for iOS 3.x versions but there was no support for iOS 4.x until very recently.
With Celeste you can Send and receive songs, photos, contacts, and more. Celeste works with any Bluetooth transfer-capable device and integrates perfectly with inbuilt iOS apps.
Check the Celeste demo after a break: