Lancer

Lancer is the codename for the highly-optimized Vorbis libraries and utilities by BlackSword of the Ogg Vorbis Acceleration Project.

The latest version, Lancer 20060506 (20060512 for MT versions), is based on aoTuV beta 4.51. It includes the accelerated versions of:

oggenc2.83
OggDropXPd 1.8.9
Vorbis dynamic libraries (ogg.dll, vorbis.dll, vorbisenc.dll, vorbisfile.dll)
libvorbis.dll

Note that starting version 20060506, BlackSword now provides several versions of the Lancer suite, each optimized for a certain processor feature. Here's a quick run-down (not exhaustive!) of the versions:

SSE: AthlonXP (Barton core and older), Pentium 3
SSE2: Athlon64, Opteron, Pentium 4
SSE2MT: Multithreading version of SSE2
SSE3: Athlon64 Rev E (Venice & San Diego core), Pentium 4 Prescott
SSE3MT: Multithreading version of SSE3