Micheal, you probably can "boost" the sound in your video editor.. which means you don't have to redo the whole thing, but you do have to upload again...
btw. I'm the one who mentioned the volume at your youtube channel (my youtube name is "nomoboy") and I regret I mentioned it now because I was going to re-listen the video later on today when I have more time and things are quiet in the house.... I only got to the "actor and his lines" part and I was planning to dig up my chromatic..... --------- DutchBones Tube
I don't know if there is an editor built into YouTube, but if you are using a Windows machine and have a operating system from this century I think you either have or can download Windows Movie Maker. Open up the file in there and you should be able to adjust the volume.