Problems with music players on K10

[Gerald Larose]

So I pick up the LG K10 with MetroPcs and spend a few days getting it set up. I like to use the music player to work out to so I set up Amazon music and ... the music keeps stopping. No calls coming in, no notifications, nada...it just stops.
So I add 16 G memory. No improvement. Still stops.
I'm not running a ton of apps. I do have a cache cleaner and memory booster which does not help at all.
So today I try the Google Play Music and same thing. Music stops in the middle of a song for no reason.
I've tried rebooting the phone, clearing the caches etc. No luck.
Any thoughts on this.
If I can't get this addressed this phone is going back.
Thanks