no sound on vlc of prange pi PC

[hatahata]

hi all .

 

i nstall both minidlna and vlc .

 

i hear sound youtube from HDMI (iceweasel).

 

but

by vlc on armbian i can not hear normal sound from HDMI , only rarely get noise from HDMI .

(i  try aidio  -> audio device , but no effect)

 

what should i do ?