I had asked the question about a stock 2.13 T-mobile Rom with sound drivers from 2.10 so that Android would not have the robotic sound, but the thread seams to have disappeared. Any idea why? Seems like an innocent enough question. Anyway I was able to cook a 2.10 ROM to my liking, but I would still like to know how to switch those drivers since 2.13 was a little more stable and faster on my HD2. Thanks for the help