include source for blobs (ffmpeg, fre:ac, ...)

[jmr]

In hoerbert/tools/, there are some GPL/LGPL programs distributed only as binaries.

https://github.com/winzkigermany/hoerbert-software/tree/main/hoerbert/tools/mac

Please include source for these. FFmpeg has a list of recommended steps:

https://www.ffmpeg.org/legal.html

https://www.fsf.org/bulletin/2020/fall/why-providing-source-code-for-unmodified-works-is-important