ZDNet reports that Apple has closed the iTunes Music Store security hole exploited by Jon Lech Johansen's DRM-free interface PyMusique. Says Apple, "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." Users can still preview songs with PyMusique, but won't be able to buy them through the app. No word on whether or not Apple will take legal action against PyMusique's three co-creators. Link (thanks, Rik).