64 Studio
http://www.64studio.com/
64 Studio develops a distribution of native free software for digital content creation on x86_64 hardware (that's AMD's 64-bit CPUs and Intel's EM64T chips). It's based on the pure 64 port of Debian GNU/Linux, but with a specialised package selection and lots of other customisations.
1.0
Linux-x64
4302f1aaa30b75ee4aed8e6c352d5366
ftp://download.64studio.com/64studio-install_1.0.0_amd64.iso
ftp://ftp.mirror.ac.uk/mirror/images.64studio.com/64studio-install_1.0.0_amd64.iso
ftp://ftp-osl.osuosl.org/pub/64studio/64studio-install_1.0.0_amd64.iso
http://download.linuxaudio.org/64studio/64studio-install_1.0.0_amd64.iso
http://www.mirror.ac.uk/mirror/images.64studio.com/64studio-install_1.0.0_amd64.iso