Stephen- Thanks for taking a stab at this. I have an Alpine car stereo that directly plugs into my iphone. This connection allows me to select, play songs, etc. through the car stereo while listening to the ipod. For phone functionality, there is a bluetooth connection to the car stereo as well. With bluetooth, notice of calls will cut into whatever function I am using on the stereo (eg. if I'm listening to the radio, it will break in to let me know I have a call.) When I added the tomtom app, it would function like the phone and break into give voice prompts whether I was listening to the radio or ipod. Though, I was having problems controlling the volume, as others have described. Playing around with it, I stumbled upon a way to disable voice prompts running through bluetooth (it was also annoying since it did not always work well because of the lag between tomtom sending out the voice prompt and bluetooth connecting to the stereo it would miss the prompt.) The end result is it now runs through the hardwire and I am able to control volume and get timely prompts, but only while I'm listening to the ipod function. What I have not been able to figure out is how to get it to go through bluetooth again. I just downloaded the tomtom update, so maybe there's been a fix. I know it's a bit of a conundrum since it involves integration between the car stereo, iphone, bluetooth and tomtom. Though, I'd appreciate it if anyone has mastered this app and knows how to set it back to bluetooth.
