I will release soon (this week?) a beta on the forum. It's mainly a bug fix release, so no new features on this one.
Turning the audio input into a trig input would require both firmware and hardware modification. I didn't spend much time on it but i believe that the hardware mod would be quiet easy. So MAYBE on day IF it does work properly, and IF it is doable by someone no too qualified, I MAY release an article on how to modify your MB. But nothing is planned at this time, so I would advise you not to count on it.