I installed an audio equalizer app several days ago and I'm pretty impressed with it. It's the first one that pops up when I do a search in the Market using equalizer as the key word. It has an EQ on it and it's made by Smart Android Apps, LLC. It's free, but they also have a paid version. I'm using the free version. I set it on custom setting and turn all sliders to max and there is a huge difference in volume! It is a lot louder than if I'm not running the app. I don't use Skype, but I was wondering if this might help Skype users with their low volume problem.