Are you allowed to put your own ads in embedded youtube videos that you've uploaded and placed on your site
Lets say ads from Yume.com
Sure but they'd have to be a part of the video. For example: at the end of a video say or show that you would like the viewers to visit your website.As for embedding it like other ads on YouTube, where you have the option to skip them after a couple of seconds, you'd have to contact the YouTube offices for that.
yea you can do that :) like ThatGirlMARZ said it'd be best is you put them at the end of the video though:):) nice question
Yup but you do know you gotta pay and sign ALOT of money and contracts...