After tweaking my foobar2000 installation a bit, the desire to have the option of a VU meter in MusicBee flared up again.
After some investigation, it looks like it might not be
that difficult to do.
(yeah, easily said by a non-coder)
The different VU meters that are available (hundreds and hundreds of them), come in the shape of a single .bin file.
I checked the contents of such a file, and to my surprise it only contains images, nothing else.
So a possible plugin would probably only have to read the output volume, and display the image with the corresponding image (needle position) for that volume. (and do that many times per second)
This is an example of the contents of such a bin file:

(there are 2048 images in it. 1024 for the left, and 1024 for the right channel)
And this is how sweet it can look:
