My laptop (HP Pavillion 9000) plays DVDs and MPEGs etc with sound and video. I have connected my laptop to my LCD TV using an HDMI cable and get mixed results. I changed my sound settings to use the SPDIF driver instead of the built in speakers. Initially I got no sound from anything except .avi files and .wav sound files. However, downloading the Vista codec pack fixed playing MPEGs. So I can now play recorded video (and music) content using Media Player with sound and video. However, when I put a DVD in the drive and play that, I get no sound at all. What else do I need to do?