First you need to have RealPlayer installed on your computer. It's a free download.
Then when you start your youtube video a link to RealPlayer above the video shows up.
This pops up and shows it's working.
Toward the bottom you choose what device you want it downloaded for. There are many choices. At work I used a blackberry download and it worked for the promethean board. You can choose where you want to save it to. At home I clicked a PC to try that one and it worked too.
Have fun converting!
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