Hey, that's pretty awesome that Amazon's thrown together an MP3 store app for the G1, isn't it? What would be even cooler still, though, is if you could actually listen to those tracks without a crazy dongle hanging off your phone. Like many recent HTCs (Touch HD notably excepted), the G1 eschews a standard 3.5mm headphone jack for its proprietary ExtUSB connector, meaning you'll need custom headphones or an adapter to plug in your own. What's worse, the adapter won't be available immediately at launch, just a bundled headset. Why, HTC? Why?