I've been using WMM to shoot and edit my movies for months now. In fact, I just shot and edited a movie yesterday. No problems. Audio and video were fine, nothing out of the ordinary.

Later in the evening, I tried to go back and edit another video, and....no audio. At all. I played the individual clips comprising the movie in other programs - WMP and VLC - and the audio was just fine. In fact, in Movie Maker, the little sound wave indicators in each audio clip still appear, but no sound comes out for any of them. I even reopened the video project I had just completed THE SAME DAY, and it didn't play audio.

No system updates were made - to my knowledge - and I didn't download a single thing between the time it was working and when it stopped working. This happened before, but it was only when I had Adobe Premiere open at the same time, and all it took was me closing both programs and reopening WMM.

Thoughts? Help please?