Like steve_austin said, releasing the code is in a grey area. Realistically, it's highly unlikely that anyone would actually be upset about it, so it may happen in the future.

Linux support is a completely different beast. There is a lot of code that I didn't talk about, including the absolutely massive image post-processing/color-correction library that we only have a Windows version of (and no source code for, obviously.) The Pakon's added complexity (especially automatically finding frame boundaries) makes a cross-platform, source-code-less port extremely unlikely to succeed in a remotely reasonable amount of time.