.m3u files that are created by MusicMatch 7.10 include an
unprintable character (Hex 00) at the end of each line (just before the
CR/LF characters). To correct this problem, you'll need to manually
fix the .m3u file before scanning it with MediaMonkey.
Open up the .m3u file in Notepad (or any other plain text editor) and delete the extra characters (which appears
as a space). Then save it, and rescan the file with MediaMonkey.