About 4hrs last night and then a lot of the day today!!! lol. I did a MW3 one that has the same tech theme that I actually recorded!!! I am going to post it up on youtube some time today hopefully!!!!
You log in and at the top click on your name then "My Channel" then on the left side it says "settings" then go down to "choose background" and "choose file" and then upload the file you want!!!