"I do have a soundcard... I am just too lazy to set everything up, record, edit, sync etc... I do that for all my vocals and it is really time consuming lol. and time is something I dont have much of, unfortunately."
Amey - You are an artist (a potentially great artist IMO) - If you were a painter, and produced masterpieces, and never bothered to put the final protective coating on, and stored your work in a damp room... Or even if you mistreated your rough sketches, it would be sad.
IMO, what you are doing to your wonderful 'sketches' is sad. If it comes to a choice between recording the sound well, or producing a video with crappy sound - IMO, go for the sound! Plugging in a USB "soundcard" and just recording the sound cant be that much hassle - can it? .. Getting camera and USB audio synced may be more hassle.
Oh hell - I am being a bit selfish perhaps - I would really love to hear what you played without my teeth hurting! ;-)
Fred.