azidts 0.1 - BeSweet based CLI DTS transcoding utility
Azid 1.9 - probably the best free AC3 decoder out there. Used in most of todays transcoding tools like BeSweet.
BeLight 0.22 - probably the best BeSweet GUI. Website
BeSliced 0.2 - GUI for BeSplit, creates dummy AAC/AC3/WAV/MPx files and can fix corrupt AC3 streams.
BeSure 1.2 - direct VOB/AC3 to CD audio (regular, Dolby Digital or DTS CD) conversion.
BeSweet 1.5 - Advanced audio transcoding tool. offers one-pass & two-pass Normalization, DRC, Equalization, Sample-Rate-Conversion, Delay Assertion & more.
BeSweet GUI 0.7b5 - GUI for BeSweet, azid, lame, WavBooster, ssrc and toolame.
DeDynamic 0.2 - real time dynamic range compression Direct Show filter
HeadAC3he 0.23a - smart & fast AC3 -> WAV/MP3/OGG/AC3-WAV transcoding utility (contains SSE dlls. MMX/SSE2 dlls can be downloaded here)
Lame 3.95.1 - best and free MP3 encoder
Morgan stream switcher - allows 2 audio tracks in WMP
TFM Audio filter - real time playback dynamic range compression
Toolame 0.2k - command line based WAV -> mp2 encoding, can be used as external encoder for TMPG. Website
WaveOut fix - allows you to use the SPDIF output easily with AVI/AC3 without using Graphedit
Wbias 0.81 - GUI for BeSplit.