How can I get my videos on Youtube to stop saying copyright & matched third party content?

I make videos for a online role playing game and if I go to my video manager each video either says "copyrighted content" or "matched third party content" which causes them to be disabled in some countries. This also causes an Ad in the top right corner of my channel. Please take the time... show more I make videos for a online role playing game and if I go to my video manager each video either says "copyrighted content" or "matched third party content" which causes them to be disabled in some countries.

This also causes an Ad in the top right corner of my channel.

Please take the time to read this and understand what I am saying.

Thanks!
Update: I use music I purchase on itunes and give the rights to the site of the game.?????
5 answers 5