I have a Denon 2310CI. It is hooked up to cable, XBOX 360 and my HTPC. When I listen to music with my HTPC (optical connection/VLC media player) it sounds extremely bright. So bright that the tweeters sound like they're crackling a little. If I change the eq on VLC it'll go away for a few tracks then come back, if I change the eq again it'll go away for a few tracks and come back again. I don't have this problem with the cable, video games, or anything else. Is it a VLC thing maybe? Anyone have any thoughts on this? Speakers are JBL Northridge E20's (those are the only two that get used for audio, stereo mode).