Since LMS update Version: 8.1.1, piCorePlayer/Squeezelite stopped playing m4a files!

Greetings to all forumers,

Newly registered here, I have an issue with the latest LMS update applied on my Pi 4/piCorePlayer:
Logitech Media Server Version: 8.1.1 - 1610364019 @ Thu Jan 14 06:27:45 CET 2021

Since this update I lost the possibility to play my Apple Lossless files from my library!

Anybody know what is the cause and the remedy?

Thanks in advance.

Naass