Countless references through mtpdude, gnomad2, forums, recompile-threads... others, I ended up at libgphoto2
Interest in mtpdude and libmtp versions seems to have dried-out in favour of this libgphoto2 project.
It has a bit of a misleading name, because the project does a lot more than enable connection of camera's. They also support most-any MTP device.
And the Creative Zen Vision:M is specifically mentioned as 'supported' !!
See ( http://www.gphoto.org/news/ ) or its download pages ( http://sourceforge.net/project/showf...?group_id=8874 )
libgphoto2 is the library,
gphoto2 is the command-line interface to it, and
gphotofs seemingly allows to mount a camera (or mediaplayer)
So... can someone cross-compile these to the wl500g 'unslung' --or wherever precisely-- that would allow it to be used via the ipkg ?
And sorry for requesting libmtp first. It seems a lot of people have been struggling with the applications built on top of that (like mtpdude's versions and the sudden-stop on development efforts in that area)
Gerard