Audio choices in a playlist

I would love to be able to turn audio on/off or volume in a playlist (or layout) on a video by video basis. Even on the premium plan I can only set ALL audio on a schedule. At the very least I'd like to be able to simply upload one video that has audio and be able to choose on that entry of that playlist to play the audio or not. Now I must create and upload two different versions of the same video for times when I want audio and times I don't. I can't use audio scheduling as that controls the entire monitor... there are a lot of times I would to have some videos with audio and some without in a single playlist.