ac3filter_2_6_0b.exe - AC3Filter Full - Recommended for everybody. Can be installed on both x86 and x64 platforms. Compatible with all versions of Windows except Win9x.
ac3filter_2_6_0b_lite.exe - AC3Filter Lite - Say NO to fat software! Only the codec itself. Install this version if you do not need translations, 64bit version and ACM codec (used rarely, in programs like VirtualDub). This package contains fully-functional 32bit AC3Filter