Apple has recently released iOS 4.1 for iPhone and iPod Touch.

It enables remote track controls (AVRCP commands)
from your Bluetooth headphones, a feature that
iPhone and iPod Touch users have wanted for a
long time, and does away with JayBird BluTrax!
application for iPhone.

Finally, Bluetooth headphone users get the full
user experience on iPhone and iPod Touch! It's
a great time to be using Bluetooth headphones!

Update your iPhone or iPod Touch to iOS 4.1.