Hi! The telephone call recording system at work saves all recordings from the call centre to .wav files for review by QA (Quality Assurance). Some of these files don't play on one of the QA computers, but they do play on the other one. This suggests a problem with the computer... I originally thought to check the headphones, but they work (I played music (in mp3) through them). It's also not the sound card because I was able to listen to said mp3 files. I then thought that it might be a missing codec. Unless I'm mistaken, if a codec is missing, Media Player would throw an error telling you that it can't plau the file, but it doesn't. So I don't think it's a missing codec. So, hardware has been eliminated, so has software... Both QA computers "listen" to the file (which is on a central location and doesn't move. That said, the file being audible to user 2 (computer B - this eliminates the possibility of the file being corrupted), should also be audible for user 1 (computer A), but isn't. I'm out of ideas, can anyone assist?