from http://news.com.com/2100-1027_3-5628616.html
Apple Computer has closed a security hole that allowed an underground program to tap into its iTunes Music Store and purchase songs stripped of antipiracy protections.
...
"The security hole in the iTunes Music Store which was recently exploited has been closed, and as a consequence the iTunes Music Store will now sell music only to customers using iTunes version 4.7," the company said in a statement.
ratbastards! That's a 20 MB download to upgrade. Ugh!