Wrong Joe. sorry and btw:welcome to the forums.
The mmd file is metadata. When in properties select the colour you wish to correspond to the audio file, click OK (on the colour) then click Metadata and then the Ok underneath this. I’ve tried this too, it does not colour audio in a cartwall.
Perhaps Torben can help here?
It works if you add a jingle (or any piece of audio) in the playlist. this is handy as it makes Music/jingles?ads easy to spot.
If you look in the script section, Charlie has posted a script to add different colours (and icons) to differing audio. Just alter the script to point to the icons by path name.
Then build a playlist with the audio you wish to colour, add icons or comment (these are documented inside the script) to a playlist.
Open the event editor (the E). Click Add by Actions, run script and find the script prepared from Charlies example.
In the event options click Automation and Assist, select day and time. Close this window and click run. If I have remembered this correctly, any audio in the playlist will magically be tagged to the options you specify.
To make this easy to find next time give this a name in the top of the dialog in the event window.
Click close on the event editor. Providing in the config you have set events to be remembered with the desktop. Clear the playlist (unless you need this view everytime) and save the new desktop. Each time you make a change to a standard desktop, remember to save as standard.mlt in your mairlist folder.
I’m off on holiday so if this does not work, Torben, Charlie or Cad will no doubt help (and normally get things right first time, me I get there eventually).
Kind regards tony