I was very brief, but there are a lot of descriptions here and elsewhere. But I can tell you that the seven times is just a joke to trigger the message. But a confusing one. It’s not necessary at all. No sure who put that in.
Update: The seven times is sadly valid for the FP2, but not for the FP1. Source.
The problem is that your crash can have a lot of different reasons. To somehow sort out that could be the reason (is Android/the kernel crashing? Your streaming software? The wireless?) you have to ‘watch’ what the phone is doing in real time. The only way to do this easily is using adb logcat.
Else we can only guess. So maybe it’s best if you try a reinstall, like Paul suggests.
What software do you use for ‘streaming audio’? Can you explain this a bit more?
I know this all does not sound very user friendly. But even with a logfile, it’s still very difficult to find the cause.
So in the end, maybe a backup of your data and a reinstall, maybe even using the unofficial Android 4.4.4 could be better.