VolumeButtonExtender is a lifesaver if you drive. It lets you change the song safely without needing to turn on the screen then double clicking the home button then aiming for the Next Song button. You can simply hold the volume up button and it goes to the next song. Great stuff. If any of you use an FM transmitter to listen to your iPhone/iPod Touch in the car, you know that you have to turn your stereo speakers much higher than a normal radio station. With Volume Boost it removed Apple's preset volume limit and enabled you to set a higher max volume. It's a shame these two haven't been updated for iPhone 4 yet. Great apps, those two. Great apps. Free as well.