I'm looking for a Bluetooth Aux dongle that will also charge my iPhone. I have a Kensigton LiquidAUX which is PERFECT but Kensington no longer makes it and I'm having trouble finding something exactly like it. Griffin has one but it doesn't charge from what I can tell. It's just an aux port and bluetooth connection. http://store.griffintechnology.com/iphone/iphone-4/bluetrip-aux It won't charge anything. Any suggestions?