Hello. Sorry to re-open an old topic, but I only recently hit this issue. I didn’t find anything useful on this forum, so having discovered the cause I thought I’d put it here for those that follow.
In their simplest form, M3U playlists are just text files where the first line is:
#EXTM3U
and the following lines list the names of the mp3 files.
The problem seems to be that the ClipJam expects a DOS format text file (with 2 characters that mark the end of a line), and rejects any in UNIX format text file (where there is only one character at the end of a line).
You need to look for a tool that can change the format of the playlist file. On Cygwin and Linux (and I assume a Mac) you can use the unix2dos tool from the command line - which you would use like this:
unix2dos PLAYLIST.M3U
