I bought a 2007 w221 S320L a couple of weeks ago, the car is in mint condition and drives perfectly. It replaces my w220 S320L which had to be scrapped due to rust developing on the underside, body work however was fine. The car currently has: COMAND NTG 3 - No birds eye view - I can not use full UK Post Codes for SatNav. COMAND APS Map Update DVD 2015/2016 installed Official Mercedes Benz HFP Bluetooth Puck in the arm rest - This lets me handle calls fine. No music option. No AUX input / iPod connector / RCA connector in the arm rest or glove box Single CD/DVD player with PCMCIA slot I would like to be able to stream music via bluetooth and use the steering wheel to control 'next/previous tracks'. Searched the forums to see what telematics / navigation / software / firmware / hardware updates can and cannot be done to this car. I have read some contradicting posts online, most of which are old posts and I am hoping there is some more up to date information available now in 2017. I have seen information about a Viseeo MB-4 Plus adapter kit. I understand this would mean removing the Official Mercedes HFP Bluetooth Puck and fitting the Viseeo in its replacement. Looks to be the easiest option, however I cannot seem to find a brand new one to buy. Most places online are out of stock. Circa £250.00 Another product I have seen is a Viseeo Tune2Air WMA3000A wireless bluetooth kit. About £80.00 - 90.00 and seems to be in stock. This option means I would need to get the Mercedes Media Interface fitted in my glovebox. Anyone know if any MB main dealers can do this and if so, what is the rough cost. Or of any MB specialists? Commandonline.co.uk list a Mercedes iPod kit (pre 2009 face lift) for £800.00 Both of the above appear to allow for audio streaming and controlling of tracks with the steering wheel and are hidden in the car. No visible parts. Are there any other (hopefully cheaper) options out there.?