How much would you pay for 30 seconds?

This undated image shows Apple’s new iTunes Plus Web site.

“Just when it seems the music industry is starting to come around to the realities of digital distribution, groups representing songwriters, composers, and music publishers are hoping to tack on additional licensing fees to music downloaded online. If fact, the group would like to earn performances fees even from the 30-second previews you can hear when you browse the iTunes Store.” More here: http://arstechnica.com/apple/news/2009/09/songwriters-want-to-get-paid-for-30-second-song-previews.ars

Really? They want me to pay for a 30-second preview? So how much do you think 30 seconds of Kayne West is worth? Taylor Swift? Beyonce?