Play Music , sometimes stop

Hi
I Have a problem i dont see a resolution
so i launch the radioboss with music and adverts , sometimes , my music ( play , but dont output signal audio ) , when launch adverts play ok .
Why sometimes music dont play ! i see playing with counter but VU stooped 0% volume, i dont understand whats appened ... 

Do you see the timers (elapsed and remaining song time) moving under the "Now playing" bar? What RadioBOSS version do you use?