Final answer:
Dave's friend and the website are likely guilty of copyright infringement, which is when copyrighted material is copied or distributed without permission. The MGM Studios v. Grokster case determined that companies enabling such actions can be held liable.
Step-by-step explanation:
The crime that Dave's friend and the website might be guilty of is copyright infringement. This occurs when someone copies or distributes copyrighted material without the permission of the copyright holder. Given that state and federal governments protect intellectual properties, such as copyrights and patents, it is illegal to download music, movies, or video games without proper authorization.
The landmark Supreme Court case MGM Studios v. Grokster (2005) established that companies distributing file-sharing software that enables copyright infringement can be held liable for their actions. This legal standpoint implies that both the individuals downloading the songs and the operators of the websites providing them could be subject to legal repercussions for their involvement in copyright infringement activities.