I have this little gadget and I love it. It allows me to play my iPhone’s music to my Bose Sounddock, untethered, via Bluetooth. It’s super convenient and easy to use.
Wireless Bluetooth Music Receiver for audio docks made for iPhone 4/4S including, iHome, Bose, Logitech, JBL, Phillips, Sony, 30-pin iPod/iPhone speaker dock. Wireless range 33 feet, 10+ meters (free space). No batteries, no maintenance. Powered by the dock you connect it to. Uses the Bluetooth A2DP protocol to easily stream your audio.
Buy it here: CableJive Wireless Bluetooth Music Receiver Adapter for Bose SoundDock and other iPod and iPhone Audio Docks including iHome, Bose SoundDock, JBL, Logitech, Sony and other 30-Pin Audio Docks for Wireless music. Connect dockBoss air adapter to your speaker dock and control your music from your phone up to 30 ft. away.