Stig includes in his song "sneaky" a few seconds of wily's copyrighted sound recording "wits" without permission. some federal courts have found that such digital sampling is

The answer is: 
- a "fair use" exception to the provisions of the act
- a violation of copyright law
- not a "fair use" exception to the provisions of the act

The difference in response is caused because it would depended so much on the use of the sampling.
If the sampling is used for commentaries or educational purpose, it would fall under the fair use exception, otherwise it would fall on violation of copyright.