Yes, I think what Lorraine proposed is Fair Use. It's a limited portion, and creating a mashup to advertise the event is a transformative use (i.e. different from original purpose of entertainment). Although I'd leave out Disney if you're feeling cautious.
p.s. the 3 minutes guideline is only a commonly accepted practice, not actually part of the copyright law. Have fun. Barb Bergman | Media Services & Interlibrary Loan Librarian | Minnesota State University, Mankato | (507) 389-5945 | barbara.berg...@mnsu.edu<mailto:barbara.berg...@mnsu.edu>
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