We have the Speedlight set and when playing it during service, it doesn't even last a song before the sound stops.
I usually have to mute the board, power on/off the module and it starts to work again until the next time the sound goes out.
I do notice that every time the sounds stop, the trg light is constant on orange
It is probably something related to the internal memory- which is a SD card inside the Three.
You should try to change the card to new card and copy all content from the old.
Best Regards
Anders / Zourman.com