Expert Sleepers has announced the release of a 64-bit version of Augustus Loop AU for Mac OS X.
Augustus Loop v2.2.0 is Expert Sleepers' first 64-bit release. It's a 32-/64-bit Intel Audio Unit and so can be used in native 64-bit mode in Logic 9 and Mainstage 2.1 when those hosts are running as 64 bit applications.