Just use the arrow keys to move-this is not a physics engine, and I know it is hard to move.
The idea behind this project was to create a conceptual mock-up of left-right and under-above water audio. It was going beautifully until I figured out...Scratch 2.0 only has support for mono audio and basically ruined my audio files the moment I uploaded them! *trigger brain bomb* Scratch team stereo audio please!