Thanks for the response! Much appreciated!
I found, and have been using the KLite solution for quite a while, now... It works really well. I did try to run Blue Plasma without it a few weeks ago, after updating to Windows 11, and found that it worked until I restarted the computer. I then reinstalled the KLite codec pack.
I will download a fresh Blue Plasma dream, and see if that works without the KLite codec pack.
Do you think the 4k conversion will be possible?
Thanks, again!