Have you wanted to use your PDA/Phone as an MP3 player in your car, but your stereo didn't have a line in jack?
If so, then your typical options were to use an FM modulator or a cassette adapter.
If you have ever used one of those crappy FM modulators, you would know that the quality of the signal is pretty poor as well as if you live in a metro area finding a free channel is quite difficult.
I had used a cassette adapter for a while and while the sound was adequate, I really wanted a wireless solution... I had a miniusb to headphone adapter that I used, but the cords were short and would dangle all over my stereo head unit. I wanted a BT connection.
Then I found the
Insignia NS-BT300F. Bluetooth speaker adapter for iPod docks. It is a discontinued item that I found for $5.00 at a local Big Box store
Insignia :: All about affordable and well designed technology - Insignia Bluetooth Receiver for AppleŽ iPodŽ Speaker Docks
I then found an iPod car charger that had an audio out jack that i could plug my cassette adapter into.
Griffin Technology: AutoPilot
So now I could BT to the Insignia, connected to the iPod charger, audio out to cassette adapter in my car's cassette deck. All the cords except for the cassette adapter are stuffed into my ashtray, and the cassette adapter cord is pressed into the seams of the dashboard panels, so only about 2 inches of cord are visible where it runs across my radios' face plate.
The BT connection is stereo and it has the Wireless Stereo profile, so it doesn't interfere with a handsfree profile
All together it cost about $60.00 for all 3 products
I just found this item that would do about the same thing:
Amazon.com: Sony Ericsson Bluetooth Music Receiver MBR-100 - Bluetooth wireless audio receiver: Cell Phones & Service
but needs to be charged or use a charging cable