I'm having the same issue. Enabling or disabling the wifi through the indicator (or whatever they're called on Ubuntu Touch) pauses the music for at least a full second, while doing the same with rfkill on the command line works just fine without interrupting the music.
I'm also using the Aquaris, but I'm running the normal Ubuntu 14.10 (r21).
I'm having the same issue. Enabling or disabling the wifi through the indicator (or whatever they're called on Ubuntu Touch) pauses the music for at least a full second, while doing the same with rfkill on the command line works just fine without interrupting the music.
I'm also using the Aquaris, but I'm running the normal Ubuntu 14.10 (r21).