Tools of the Trade - Mac OSX

FLAC players for MacOSX...

X Lossless Decoder
http://tmkk.undo.jp/xld/index_e.html

Cog - an open source audio player for OS X.
http://cogx.org/
Download the latest build
http://cogx.org/development.php

CD Ripper for MacOSX...

X Lossless Decoder
http://tmkk.undo.jp/xld/index_e.html

MAX for Mac OS X 10.4+
http://sbooth.org/Max/

CUE files and file splitting...

Split album length 'CD Image' FLAC files to individual tracks using a CUE file.

X Lossless Decoder (XLD)
http://tmkk.undo.jp/xld/index_e.html

MAX for Mac OS X
http://sbooth.org/Max/

Burn Audio CD...

Burn for MAC OSX
Burn - a simple approach to burning discs, but still offers a lot of advanced options.
http://burn-osx.sourceforge.net/Pages/English/home.html

Audio Format Conversion

xACT for OSX
xACT stands for X Audio Compression Toolkit for  Shorten, Monkey's Audio  Compressor, and FLAC. Used to Convert FLAC to WAV and other audio formats.
Information on xACT
http://www.macupdate.com/info.php/id/14246/xact

Meta-Tag Editor

Tag
A good Meta-Tag editor for MAC OSX
http://sbooth.org/Tag/

Audio Production and Editing

Audacity - A full featured Audio Editor
http://web.audacityteam.org/
Manual:
http://manual.audacityteam.org/
Downloads:
http://web.audacityteam.org/download/

CODEC Information

FLAC (Free Lossless Audio Codec)
Audio compressed with FLAC has no loss in quality.
https://xiph.org/flac/index.html
Tools for Mac OS X and Linux
https://xiph.org/flac/download.html

Audio Spotlight Importers for MACOS

About Spotlight
Spotlight importers expose metadata in files to Spotlight, allowing easy, powerful desktop searching of your computer's contents.
http://www.apple.com/macosx/what-is-macosx/spotlight.html

FLACImporter
FLACImporter is a Spotlight importer for FLAC
Allows Spotlight searches on the FLAC file's metadata such as title, artist, album and genre.
http://sbooth.org/importers/