My Denon DVD-2200 player locks up when I try to access the dts tracks from the menu on the ELO "Zoom" dvd. I installed the Denon firmware to fix the dts issues on one of the "Alien" dvds because this problem sounded very similar to the one I'm having with "Zoom". However, this did not solve the problem. Other players are able to access the dts tracks, so it doesn't appear to be a software issue. Any help would be greatly appreciated!