hey guys someone just asked me to create about 50 videos on weight loss. Right now, i don't know where to start from, but i do know about video sharing sites that will help me. The problem is, i am using camtasia to record videos, but i am unable to record sound. I read the help manual but it seems like in order to record audio, i have to speak on the mic. So is there a way, that i can quickly record my screen and the same audio being played in the background ? please help.