Right, I found a web site.

- - after exporting my "waking up" iTunes playlist to "waking up.xml" I was able to convert that to "waking up.m3u" via the nifty site..

still, there's one slight prob.. when the waking up.m3u playlist is clicked on to open, iTunes opens right, & the first song in the playlist is played.. yet, when that first song finishes, iTunes plays the next song in the Library and then the next one in succession after that according to the Library order, so on and so on.. not the next song in the playlist as I'm very keen on wanting it to do.