I'd like to reply to those things you mentioned to clarify.
1. Noise during PC absense is known. We will address that in a new design.
2. Slow response. Unfortunatelly MBus is slow by itself. Usually it takes about 0.8 sec to get button press to the PC. All other protocols are much faster...
3. Song number limitation. It will be addressed in the software. MBus is very limited in this regard. One problem here though that some MBus units cannot understand track 00, so you may see 01 for 100 and 101, 200 and 201 etc.
4. RoadRunner plugin. I'll work with Guino as it seems like the software issue.
Thanks for the feedback. Appreciate it.