.BONK File Extension
What is a BONK file?
Audio file created in the Bonk format; supports both lossless and lossy compression and uses speech compression techniques to achieve a higher compression ratio than .MP3, but it is not supported by standard audio players.
BonkEnc, a program used for encoding BONK files, was renamed to fre:ac, which stands for "free audio converter." This program can convert BONK files to other more common audio formats.