Thanks to everybody who pointed this out to us.
It seems the new feature we introduced in P.A.C 1.4 that allows the alarm to go off in the morning even if the phone isn’t on charge has created a problem of its own. Squash one bug and another pops up in its place…
Turning the screen off now stops the music playing when you’re trying to doze off – not ideal, we know. We’re working on a fix now (in fact we think we’ve found one) and as soon as we’ve tested it we’ll upload a new version.
Sorry for the inconvenience, but in the meantime remember you can dim the screen by tapping the main time display (or even place your phone face down).