Haven't found much time to work on the project this summer, but I did identify most MIDI commands to control the Pandora, and I have a working Java command-line sample that can download presets, and modify them. Still, I did not implement any GUI, which will be the biggest part of the project. I didn't decide either if I continue the project in Java, or switch to C++, any GUI and MIDI capable library advice from linux audio developpers are welcome.