When it comes to lossless compression, the most interesting codec for Amiga is the TTA (True Audio)
"True Audio compresses up to 30% of the original, broadly similar to FLAC and APE. It features a
real-time encoding and decoding algorithm"
https://en.m.wikipedia.org/wiki/TTA_(codec)
http://tausoft.org/wiki/True_Audio_Codec_Overview