I am having problems using VLC Media Player on my MacMini to create m3u playlists that work on my Clip Sport.
I decided to try the freeware software “mp3tag”. The website includes a version that is specifically prepared for OSX users using “WineBottler”. This special version allows running the Windows version of mp3tag under OS X through a program called Wine. This has the side-effect that the app will still look like a Windows app, but the benefit is that you don’t need to install Windows on your Mac or have a virtual machine running — and you can run Mp3tag on Mac OS X.
Here is the link to download the OSX version of mp3tag with the Wine app included in the download.
For best ID3 tag compatibility with the Clip Sport:
Under Tools set: Write to ID3v2.3 ISO-8859-1. The ISO is how Windows displays the alphabet, as opposed to UTF on OSX.
I am having best results saving my m3u playlists inside the subdirectory that contains the related music files in the Music folder in the internal memory or external micro SD card. The playlist can only list music files that are in the internal memory OR in the micro SD card, NOT BOTH.
I use Music mode to access my playlists in the player internal memory.
I use Card mode to access my playlists in the micro SD card.