Sound Keeps Vanishing??

[FOXHOUND MGS4]

Has anybody had any odd sound glitches in this game? As in no SFX or voice-overs but still get the background music? It's really starting to bug me now as i aint gotta clue what's being said half the time :mad:

[ZZBroncos]

Yep, I have had the same issue when I use digital optical output from my 360. If I just use a HDMI cord for both its fine, but I cant use it on my surround sound... Fail