FIFA 20 soundtrack unpacking from Frosty .chunk file

[Skoczek]

I know about tool called FIFA 19 Sound FIFAHarmony Tool, which works, but it exports only the first song in the stream. And yes, it works also with FIFA 20 files. The author of that tool responded only once saying that .chunk file has to be splitted manually with some hex editor.

Simple question: how am I supposed to do this? As when I open this .chunk file in hex editor, almost full chunk seems to be random characters spread without any logical order.