Problems with AC3 sound

Hi, i have problem with playing all MKV files with AC3 sound on my WD TV Live connected with HDMI to Philips 42PFL9703D.If I set audio output to digital - no any sound. If put to stereo  - intolerable scratch and growl sounds.

Any idea? Ty.

Welcome to the forums.

Not all receivers decode HDMI audio – you might try the optical connection from the Live to your receiver to see if that works (and you *will* need to set the output of the Live to digital).