Here's a couple tips...
1) Avoid putting media in folders or files that begin with a period (.) because the Linux file system will treat folders/files beginning with a period as hidden by default, and MC won't import files from those folders/files. I tend to run into this with albums that contain preceding periods in front of the albums name, e.g. ...And Justice For All. Having the periods in the file's metadata isn't an issue though so you don't have to do anything there. I have to use a complex directory regex rule in the Rename, Move, & Copy Files tool on Windows for it to play nice (and avoid creating folders that begin with periods) on Linux and macOS as well as I have all three OSes installed on the same PC. And yes, do note this also applies to macOS as well.
2) If you have your audio device (e.g. a USB DAC) connected to your computer running a Linux distro, make sure you select the hw: or front: output in MC's Options > Audio section to bypass the system mixer if they're available. Don't use system default or the pulse output, as the pulse output resamples everything to 48kHz by default.