T16 music sync in background

[dariocdj]

If you run music sync in t16 and try to enter in another node or in another slot of same node, music sync stop. It can be nice to leave music sync running, where you exit

[plinioseniore]

I don't know if we should fix or not this, because is a feature that I assume is not that much used. Lets see @shineangelic opinion.

[shineangelic]

not feasible at a reasonable time-price. A separate Thread would be needed, able to intercept audio-flow that's actually intercepted by activity (which, if closed, stops the control flow)

Not an easy task, indeed