Merry christmas! :)
(This was supposed to be a looping GIF file, but since I can't seem to find a working youtube-to-gif-maker online that actually works with good results, this will have to do for now)
"8. - Do not use camera jitter enabled in-game for video recording!"
IMO, this isn't exactly a rule of thumb, maybe a more personal choice/opinion. I tend to use it quite alot, depending on the camera angle, situation, scene, zoom level etc..
You mean, when you record using Fraps (and turn ON audio recording) you dont have any audio within Vegas? Might be some options within vegas then. I've never had that issue.