A couple more questions for you. I received the mp3 bit as part of the Smart House Kit today and have been experimenting. I tried the pulse bit idea and while this works (sort of) it actually plays the first moment of the each track as it cycles thru them which is a little disorienting at best. I also noticed that when the pulse bit is connected in series as you described, you can hear the "pulsing" even when a track is not being played. It's like there is a little electrical noise getting thru somehow. Is that normal?
Anyway, I was thinking that I might be able to tweak my project by adding a second or so of silence at the beginning of each track. Maybe that will help. I'll try it and see.
My second question is that you mentioned that reprogramming the microcontroller would be required to add a genuine random function. My question for you is, hypothetically, is the mp3 module upgradeable in any way? Meaning is a firmware update a technical possibility as it is in the cloud bit?
Thanks for your help...