Iam thinking about using my iphone as a backup-solution. (for playing 2-track files, like metronome left, backing track mono right) next to my ipad with multi channel output.
But it seems that some things can stop the playback or get an annoying sound no one wants during a playback?
Like... phone is ringing, SMS, whatsapp, calender entry, timer, email... things like that.
Isn't this a problem?