Keyboard shortcuts

[ddfault]

Aloha, I was trying to compare encoding to determine which one looks the best. I was able to add multiple sources (only the original has audio) and I see in settings under Video, there is Audio Mode section where by default Muted is checked, but I cannot find a help section that lets me know any keyboard shortcuts. The mouse over GUI doesn't seem to show anything about audio either. Is there a keyboard shortcut for toggling mute or changing volume? Is there already help section somewhere about the various keyboard shortcuts? Spacebar does appear to pause play the video so there are some keyboard shortcuts. I didn't see another post about keyboard or mute so I thought I would ask. Thank you for making this software solution.

[ddfault]

It turns out what I thought was the source with audio was in fact just a video. I loaded in a source with audio and the Audio controls show up on the right side of the mouse over GUI! These allow for toggling audio on and off and changing the volume. So there is that! But fiddling with the "m" key with modifiers such as Ctrl and Alt and Shift don't seem to toggle mute. volume up and down don't seem change the volume either so that portion of my question still stands.