No sound while using Volumio for Cubox (not Cubox-i)


I am a cubox owner (not cubox-i). I downloaded & use the beta Volumio in my cubox. The sound it produced is amazing to my system. I love it. However, I encounter a problem where suddenly it produce no sound after playing several songs, even I apply the CM fix as suggested in the Web UI.
May I know if there are users having had similar problems?
Would it be becuase this release is still a beta? If so, would there be any schedule to have an offical release (like cubox-i)?

Thanks, Wilson