MusicMan MP3 Player with an Apple Computer
Our daughter uses the MusicMan Mini Soundstation for playing MP3 files.
It works pretty straightforward. You load a Micro SD Card with your sound files and insert it.
Strangely, it does not work after you insert it into a Mac. The reason is that Spotlight creates index files and hidden folders that confuse the MP3-Player.
You can see them in the Terminal
$ cd /Volumes/SDCARDNAME $ ls -h .Spotlight-V100 .fseventsd
You can fix that by deleting the folders and placing a special file that tells the Mac never to create these files again:
$ cd /Volumes/SDCARDNAME $ rm -r .* $ touch .metadata_never_index