I figured this out. is there no way to delete your own post??

Hey gang. Been using KDenlive to produce videos- 2/3 per week. Today went to make my new video an approached it the same way I always do.

And changing NOTHING (that I know of)... I got NO sound on render (to MP4 format). I can hear all the sound in KDL, but the rendered movie is silent.

Help?!

Windows 10/ KDLive: 20.12.3

Nice that you could solve the issue by yourself. Let us know what went wrong so other user can solve such issue by themselves as well.