I have gone to audio hardware, but I have no real options to choose from. Device class only shows MME. In default input the only other option is no audio and choosing that one doesn't help. Default output has no other options. Master clock also has no other options. All my other programs work just fine. What to do?
What is the source of the footage? What operating system are you using? Can you post a screen shot of the timeline?
What happens if you add an MP3 or WAV file to your timeline?
We need to determine if the issue is unique to your video or if no files produce sound.
I tried adding MP3 and WMV files. No help.