Great!
MC sends any single image or several images to a slideshow if a play command is given for the images during the audio playback. The current audio playlist in Playing Now does not change.
The build in slideshow timer and transition options are good, so in my opinion it would enough if the plug-in could just start the images playback when a track change occurs.
All track related images must be started with a single play command. That way they will automatically replace the previous image files list in a slideshow and MC will take care of the image playback.
The plug-in should read the folder path when a new audio track starts playback, find all image files (*.jpg and preferably *.gif too) from the track folder and give the images a play command. I have no idea if that is possible, but it would be almost perfect.
Currently I do that manually when I play full albums. I select the audio files and images and right-click play them, but that doesn't work for various playlists.