No 64bit packages for OSX/Snow Leopard
Apparently someone cant get XiphQT to work in Safari because it wont load the plugins due to them being 32bit on his 64bit platform.
[http://twitter.com/gruber/status/2504333966] 32-bit apps run perfectly in Snow Leopard, no changes necessary. But 64-bit apps can't load 32-bit plugins.
[http://twitter.com/gruber/status/2503992492] Short answer on Xiph on Snow Leopard: they need to build a 64-bit binary, but the current version is only 32-bit (i386 and PowerPC)
I honestly have no idea about the OSX platform, just relaying a bug report.