The Best Of The Best List

Accuraterip ~ Accurate DAE (Digital Audio Extraction)
AcoustID ~ Identify & Fingerprint Songs
Ampache ~ Freeware streaming music server
Audacity ~ Freeware audio editor & recorder
AudioShell ~ Freeware Windows audio tag integration
BatchEncoder ~ Freeware Audio Encoder Frontend
Boom Audio Player ~ Foobar2000’s simpler sibling
CDBurnerXP ~ Freeware CD & DVD Burner
CUETools ~ Freeware cue file tools
DADA Auto-Rating For Foobar ~ Automatically rate your music
DRC (Digital Room Correction) ~ Advanced equalization
EAC (Exact Audio Copy) ~ Advanced freeware CD ripper
Equalizer APO ~ Advanced Windows Equalization
FLAC (Free Lossless Audio CODEC) ~ Open lossless audio format
Foobar2000 ~ Advanced freeware audio player
Foobar2000 @ Deviant Art ~ Skins & themes
foo_discogs = Foobar2000 + Discogs ~ Advanced file tagging
freeDB ~ Set up freeDB access Search FreeDB
KeyFinder ~ Freeware musical key analyzer
LAME ~ Freeware mp3 encoder
MP3 Diags ~ Freeware mp3 file repair tool
MP3Gain ~ Freeware mp3 volume normalization
Mp3tag ~ Freeware metadata tag editor
MusicBrainz Picard ~ Tag songs with MusicBrainz metadata and cover art
MuseScore ~ Music composition and notation
PlexTools ~ Plextor’s CD ripper
PowerShell Audio ~ PowerShell-driven audio interface
ReplayGain ~ Advanced gain equalization
ReplayGain & Foobar ~ ReplayGain within Foobar2000
ReplayGain & Foobar under Linux ~ RPG with Wine & Foobar2000
Room EQ Wizard ~ Room equalization analysis & compensation filters
RightMark Audio Analyzer ~ Freeware Audio Hardware Analyzer
SoundHound ~ Name that tune
Sox ~ The Swiss Army Knife Of Sound Processing
Teac Editor / Teac Player ~ Hi Resolution Audio Editor & Player
VU Meter ~ Freeware Standalone Analog Volume Unit Meter
WinAmp Repository ~ NullSoft WinAmp archive
Windows DirectShow Filters – Use FLAC & OGG in Windows, freeware
WMP Tag Plus ~ Extends Windows tag support, freeware