What's the difference between the $99 Tune2Air solution that everyone is talking about and some of the $15-$30 30 pin to bluetooth adapters that Amazon sells?
http://www.amazon.com/gp/aw/s/ss_i_0...30+pin+to+blue
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2008 e90 328i: Alpine White | Black Leather | Aluminum Trim | Sport | Premium | Winter | Step | iPod | Paddles
European Delivery: June 23, 2008
US Delivery: August 5, 2008