This is getting pretty complicated, but I’ll try to write this as briefly as possible.
I am trying to import an m4a file into Audacity. Error Importing message: It’s an "Advanced Audio Coding file, I need the optionalFFmpec library.
I click the little question mark in the error dialog.
Under Importing Audio in the page that comes up, I see “You can install the optional FFmpeg library to import a much larger range of audio formats including AC3, AMR(NB), M4A, MP4 and WMA”
I click the words “FFmpeg library” which is a link. Up comes “FAQ:Installation, Startup and Plug-ins.”
Under “How do I download and install the FFmpeg Import/Export Library?” I see “Mac: See the FFmpeg installation section”
I click that. I’m taken to: “Installing the FFmpeg Import/Export Library on Mac” “For full instructions please see Installing FFmpeg for Mac.”
I click the link. I see “Recommended package installer … Go to the external download page”
I do that. I’m taken to “RECOMMENDED download:lame_64bit_osx.pkg”
I click that. It downloads. I double-click the installer: lame_64bit_osx.pkg. I see the standard installer dialog. I go through that. It says “The installation was successful.”
Back to step 1. Error Importing message: It’s an "Advanced Audio Coding file, I need the optionalFFmpec library.
In ~/Library/Application Support/audacity I see libs > libmp3lame64bit.dylib
I’m getting a feeling of deja vu, as I have the vague recollection that I tried doing this same thing years ago on an older Mac, and I’m not sure I had any success with it then, either.