Teardown: Bluetooth audio dongle keeps it simple - EDN
Bluetooth Audio Adapter for Music Streaming Sound System, Esinkin Wireless Audio Adapter Works with Smart Phones and Tablets, Bluetooth Receiver for Speakers - Newegg.com
Logitech Bluetooth Music Receiver review: Forget the aux cord, this little box turns any stereo into a wireless music system - CNET
Logitech Bluetooth Audio Adapter Review: An affordable unit with great connectivity