JFYI When I had gone to get the AUX cable installed for my GP Emotion, the guy at the Blaupunkt authorized service center did show me following device: http://www.blaupunkt.de/en/products/acc ... no_cache=1 This is compatible with all Blaupunkt audio systems it looks like, and allows you to add USB and Bluetooth functionality to your car audio system. The cost of it was around 3K or so IIRC. A much cheaper alternative is to install an AUX cable, which may cost anywhere between 200/- and 600/- (in Pune, I got it installed for 350/-). I chose the AUX cable firstly because of the cost, and secondly since the headset for my cellphone (which is a stereo bluetooth headset anyway) has 3.5mm audio jack so it can be attached to the AUX cable without any issues. I can't play songs from USB stick, but I am ok with it since I can play songs from the mp3 player/cellphone with AUX cable. Grandeur's initial investigations and snaps about AUX cable installation were especially helpful. By the way, the Blaupunkt Authorized Service center in Pune is: EKCO Electronics Suhas Pathak (Owner) 25436127 / 9822496733 Directions: If you come from Symbiosis on Law College road, you need to cross the signal for Prabhat Road, and then turn left in the second lane. The service center is on the right side immediately in a society. There is a sign board on the main law college road, and one on the society wall on your right when you turn in that lane. As I understand it is the only authorized Blaupunkt service center in Pune as of today.