iJailbreak had a tutorial for manually editing files using iFile. It was written for ios4. I followed the steps and my volume was absolutely louder than stock. In fact, when you edited the files, you could change the values so dramatically that the volume would be too loud. It would get very distorted and would sound terrible. Plus it would eat battery life. But the tutorial does work. Unfortunately I'm on iOS5 now and even though the site says the tutorial will work on iOS5, it doesn't work. Plus some of the files are located in different folder locations. I read on other blogs where people located the files and said it works for them, but I tried that as well and didnt get the same results as on ios4. I can post a link to iJailbreak of anyone wants to mess around with it. If anyone successfully gets it to work I'd love to hear from you!I agree. I've never senn a tweak that could actually boost the devices volume beyond the factory limit.