[Herodotus]

Originally Posted by wilsonmw04

PS: even in education you cannot use anything anyway you want. There are specific rules for using copyrighted materials. For example: you may only use 10% or 30 seconds (whichever is smaller) of a single piece of music. Using an entire AC/DC song is not fair use even for educational purposes.

I don't believe there is any set amount for what is fair use. Theoretically a whole album could be used fair use, as could a whole book, a whole movie, and so on. It just becomes harder to justify. There aren't really any numbers involved in fair use, it's all a matter of how the judge interprets it and how he rules on it.