[vindarel]

It's a Common Lisp program for end users and I can literally use it in 3 clicks, thanks to its AppImage (for Linux x86-64). Good (and rare) stuff!

It's also impressive to see that the audio decoding is mostly done in CL, without bindings.

[pjmlp]

Kind of, given that Common Lisp is highly influenced by Interlisp-D, Lisp Machines, so naturally it has the necessary language features for such kind of low level coding.