FFMpeg library

Audacity 3.2.1
WIndows 11
Cannot get ffmpeg library to load into Audacity.
located avformat55.dll in preference library and ffmpeg folder & ffmpeg (appliaction) is in same folder as avformat55.dll
after pressing OK cannot import or open M4A files, even after restart.

Everything works fine in Audacity 2.4.2 with M4A files, ffmpeg & avformat55.dll

Any feedback or solutions greatly appreciated.

Audacity has gained 64-bit support since. You’ll need to install a 64-bit version of ffmpeg to make it work, or install the 32-bit version of audacity 3.1.2