I am pleased to read that another Clip Jam user is having success using the Batch File method to create Playlists. I have used this method for at least 18 months with good results with my Win 10 PC. I have not found any need to remove the drive letter and colon from each line of text in the m3u files. I think the Clip Jam and Sport can ignore that bit of text.
I struggled many months trying to get the batch file method to work using my 2012 Mac Mini (OSX Yosemite). OSX creates incompatible line endings in simple text files. The resulting m3u files do not work for Playlists on my Clip Jam & Sport.
I think the PC program Notepad++ has a helpful setting (under New Document -> Windows (CR LF).
(For really persistent souls, I could try to explain how I use the Wine app to execute the Batch file method with OSX.)
