My head hurts ...

Shouldn't this just work?

Run("wmplayer.exe 'I:\Treasures\Treasures Listening Library\Supplemental Readers\Grade 1.m3u'")

I've been coding things all day and the simplest of scripts is eluding me. Why? I'm not sure.

I also tried:

ShellExecute("I:\Treasures\Treasures Listening Library\Supplemental Readers\Grade 1.m3u")

That also does not work.   Yes, the file exists. Yes, permissions are correct. Yes I can navigate to the file and double-click to run and it opens media player.