Digital Millennium Copyright Act

at http://en.wikipedia.org/wiki/Digital_Millennium_Copyright_Act

The Digital Millennium Copyright Act (DMCA) is a United States copyright law that implements  ... production and dissemination of technology, devices, or services intended to circumvent measures (commonly known as digital rights management or DRM) that control access to copyrighted works. It also criminalizes the act of circumventing an access control, whether or not there is actual infringement of copyright itself. In addition, the DMCA heightens the penalties for copyright infringement on the Internet.


Also per StreamLicensing: http://www.streamlicensing.com/directory/index.cgi?action=page&page=faq
"Copyright Law for Internet Radio Broadcasting imposes limitations on playing song requests and scheduling playlists. (For more details see our Broadcast Affiliates' T.O.S.) The following non-exhaustive list of activities is prohibited:

• Playing a specific song within one hour of a request by a listener or at a time specifically designated or requested by the listener.
• Publishing any advance program guides or using the chat/discussion function or any other means to pre-announce when a particular song will be played or the order in which songs will be played.
• Intentionally playing more than three songs (and not more than two songs in a row) from the same recording or compact disc within a three hour period.
• Intentionally performing or causing to perform more than four songs (and not more than three songs in a row) from the same recording artist or anthology/box set."