Need to have microphone
This is just like other "visualizer" it only supports microphone input. When trying to use visualizer with music from iPod, you need to play your music and place a microphone near it to have a valid visualization, otherwise it just displays random graphics.
Please do NOT advertise it as the only visualizer that works with iPod library.
Very--Dissapointed about
Audiogasm: Music Visualizer - Real time animation of audio and music for iPhone, iPod touch, and iPad