I'm in the middle of Half Life 2 episode one (steam was ripped) and am experiencing sound problems. I saved the game last night, exited and then went to sleep. I woke up, got back on my computer and watched a couple of podcasts. They are MPEG 4 videos and play in quicktime which doesn't have the proper codec to play audio from MPEG movies. So I naturally got the proper codec installed and everything was sweet (videos played with sound in a new player). I obviously watched the podcasts then after they finished I went on to play Half Life 2 ep.1. I loaded my save and started playing but had no sound. Before I installed this codec the sound was crystal clear so I immediately thought about the codec. I uninstalled it and got rid of the old reg files etc. I started playing again and STILL had no sound. This has really annoyed me. I'll take any suggestions. If it helps I think the sound is in MPEG 2 (in the game). There is sound in other games and my music is still fine. I tried reinstalling the game but to no avail.