I have a kenwood dnx6140 installed in my car which has a bluetooth and I also have an iPhone 3GS. I use the cable to play music over but as soon as I get into my car it automatically connects to A2DP and AVRCP profiles. The music playback through bluetooth compresses the sound too much and it sounds crappy. One more thing when I try to make a call while the music is being played through bluetooth it doesnot stop playing the music. Please help me out with these two problems.