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Networking

+ - BitTorrent can verify and repair corrupt files

jweatherley writes: "I found a new (for me at least) use for BitTorrent. I had been trying to download beta 4 of the iPhone SDK for the last few days. First I downloaded the 1.5GB file from Apple's site. The download completed, but the disk image would not verify. I tried to install it anyway, but it fell over on the gcc4.2 package. Many things are cheap in India, but bandwidth is not one of them. I can't just download files > 1GB without worrying about reaching my monthly cap, and there are Doctor Who episodes to be watched. Fortunately we have uncapped hours in the night, so I downloaded it again. md5sum confirmed that the disk image differed from the previous one, but it still wouldn't verify, and fell over on gcc4.2 once more. Damn.

I wasn't having much success with Apple, so I headed off to the resurgent Demonoid. Sure enough they had a torrent of the SDK. I was going to set it up to download during the uncapped night hours, but then I had an idea. BitTorrent would be able to identify the bad chunks in the disk image I had downloaded from Apple, so I replaced the placeholder file that Azureus had created with a corrupt SDK disk image, and then reimported the torrent file. Sure enough it checked the file and declared it 99.7% complete. A few minutes later I had a valid disk image and installed the SDK. Verification and repair of corrupt files is a new use of BitTorrent for me; I thought I would share a useful way of repairing large, corrupt, but widely available, files."
Music

+ - UK think tank calls for legal copying of own CDs

jweatherley writes: "The BBC reports that a UK think tank, the Institute for Public Policy Research, has called for the legalisation of format shifting. In a report commissioned by the Chancellor of the Exchequer, Gordon Brown, they state that copyright laws are out of date, and that people should have a 'private right to copy' which would allow them to legally copy their own CDs and DVDs on to home computers, laptops and phones. The report goes on to say that: 'it is not the music industry's job to decide what rights consumers have. That is the job of government.' The report also argues that there is no evidence the current 50-year copyright term is insufficient. The UK music industry is campaigning to extend the copyright term in sound recordings to 95 years."

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