The five basic rights that copyright confers are...
The right to reproduce the work
The right to create derivatives
The right to distribute copes to the public
The right to perform the work publicly
The right to display the work publicly
note that these rights are not absolute, there are exceptions (most notably the "fair use" doctrine)
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Text copyright Eoin Colfer, 2001- present day. The moral rights of the author have been asserted.
You will need to get permission from the copyright owner. This is rather unlikely, however, and most pirated content is removed from the YouTube website.
No, it is unlikely that any content Sega owns would not be copyrighted. Should you want to use the soundtrack, make sure to contact the copyright owner about it.
Your problem isn't as much with copyright as it is with trademark. The images you describe (Disney, MLB, NFL, NBA etc logos) are, in all likelihood, trademarked to their respective companies and while a copyright infringement might be overlooked a trademark must be "vigorously defended" or the owner risks losing control of the mark.
Warner Bros. and DC comics- but they lose them all over to the heirs of the Siegel and Shuster estate in 2013 as they already have reobtained the rights of the origin story involving Krypton.