I ordered an adapter over the Internet so that I can hookup audio output at the same time that I was charging/data transferring. It is the HTC branded adapter from this web page. http://www.wirelessground.com/sc5310.html I can't seam to get it working, it did not come with any documentation. I can use it in conjunction with the charger and the phone will charge, but I can't get it to work with 3.5mm TRS head phones. I've looked under the phone's settings menu, but I did not find a setting to change.If I plug the adapter into the phone first, then I can hear the head phones pop a bit, when I plug them in.Phone: Dream/G1OS: Android 1.6 stockCarrier: T-Mobile
have you tried to buy a new one ?