Subliminal Talk

I'm currently using Pi Music Player on Android to play my subs on my old smartphone I have hooked up to speakers on my bedside table. I have it set to continuously repeat the one ultrasonic sub, but I'm finding when I check it occasionally that it has stopped playing! It's very frustrating. 

So I'm looking for suggestions or recommendations of other players that will play continuously.

.....

Thank you, I'll look into those suggestions. I have been trying You Tube Music which appears to be working, no random stopping. Every time to check it, it's still playing. :-)