Get fre:ac from Download.com:

Or download the latest release here:

• Self extracting installer: freac-1.0.20a.exe
• Plain .zip package: freac-1.0.20a-bin.zip

• Source code .zip package: freac-1.0.20a.zip
  
  (To compile fre:ac from source code you need MinGW GCC 4.0+ or Microsoft Visual C++ 10.0 and smooth version 0.8.70.10.)

Download fre:ac CVS snapshot 20130430 (all packages also include the source code):

• Windows

• Binary .zip package: freac-20130430-windows.zip
• Binary .zip package (64 bit): freac-20130430-windows-x64.zip

• Mac OS X

• Binary .dmg image (64 bit): freac-20130430-macosx.dmg

• Linux

• Binary .tar.gz package: freac-20130430-linux.tar.gz
• Binary .tar.gz package (64 bit): freac-20130430-linux-x64.tar.gz

• FreeBSD (built on FreeBSD 9.1)

• Binary .tar.gz package: freac-20130430-freebsd.tar.gz

• NetBSD (built on NetBSD 6.0)

• Binary .tar.gz package: freac-20130430-netbsd.tar.gz
  (not compatible with NetBSD 5.x and earlier releases)

• OpenBSD (built on OpenBSD 5.1)

• Binary .tar.gz package: freac-20130430-openbsd.tar.gz

• Solaris (built on Solaris 11)

• Binary .tar.gz package: freac-20130430-solaris.tar.gz

The fre:ac Component Development Kit (CDK) enables software developers to create custom BoCA components for fre:ac development snapshots. The latest release of the CDK is CVS snapshot 20130430:

• Windows

• Binary .zip package: freac-cdk-20130430-windows.zip
• Binary .zip package (64 bit): freac-cdk-20130430-windows-x64.zip

• Other OS

• Source code .tar.gz package: freac-cdk-20130430-other.tar.gz

These plug-ins enable Bonk audio file support in Winamp:

• Bonk plug-in for Winamp 2.x and 5.x (including sources): in_bonk-0.9.1.zip
• Bonk plug-in for Winamp 3.0 (including sources): cnv_bonkpcm-0.9.zip

The following encoders are not included in official fre:ac distributions:

• BladeEnc MP3 encoder version 0.94: encoder-0.7-mp3-bladeenc-0.94.zip
• NTT TwinVQ VQF encoder version 97012000: encoder-0.7-vqf-twinvq-97012000.zip

The Software Requirements Specification written by Vasilis Kleanthous gives an overview of the project and details program features. It can be used as a basic manual:

• BonkEnc Software Requirements Specification v1.0.6 (PDF): BonkEnc-SRS-v1.0.6.pdf

These papers describe the Bonk format extensions introduced by BonkEnc: 

• Bonk Binary Format specification v0.9 (Rich Text Format): bonk-binary-format-0.9.rtf
• Bonk Binary Format specification v0.9 (Plain text): bonk-binary-format-0.9.txt