Go to http://www.musicandmedia.org/about/ and familiarize yourself with music & media. Once you understand the organization, click on Hot Topics, scroll down to "Where Music Will be Coming From" by Kevin Kelly and read his article.
Also read "The Mixtape of the Revolution" found at http://www.nytimes.com/2012/01/30/opinion/the-mixtape-of-the-revolution.html?_r=2&ref=todayspaper
Read this article on a recent payola prosecution: http://www.slate.com/id/2123483/ and its link to the 50s: http://www.straightdope.com/columns/read/2176/whats-the-story-on-the-radio-payola-scandal-of-the-1950s
This is light reading so once you have finished, do a little research to be able to:
- Say why the government would care about payola
- Give another example of speech regulation in radio broadcasts
- Give an example of another regulatory situation that resembles payola
- Determine if payola is the reason for the blandness of the music currently on the radio