Thanks a lot, Marko!
It took a while to follow all the steps carefully.
It was was a little bit different as I'm on a 64 bit machine.
The .dlls were in C:\Program Files\J River\Media Center 31\Visualizations\.
I copied them to C:\Program Files\J River\Media Center 32\Visualizations\.
I registered them using the Terminal (Administrator) i.e.: regsvr32 "C:\Program Files\J River\Media Center 32\Visualizations\Aeon_JMC.x64.dll".
With regedit I exported i.e.:
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\JRiver\Media Center 31\Plugins\Display\Aeon
changed the path in the .reg file to [HKEY_LOCAL_MACHINE\SOFTWARE\JRiver\Media Center 32\Plugins\Display\Aeon]
and imported it to the path
Computer\HKEY_LOCAL_MACHINE\SOFTWARE\JRiver\Media Center 32\Plugins\Display\Aeon
For information:
I used MC 31.0.87, MC 32.0.6 and the latest SoundSpectrum versions Aeon 4.11, G-Force 4.83 an WhiteCap 4.83.
Thank you, Helibaby! I followed your instructions and was able to get G-Force Gold up and running on MC 32.0.6. It took me a few tries, and I made sure to back up my Windows Registry before trying anything.
A few things I noticed from my own experience (YMMV).
I closed MC, both Media Server and Media Center.
Per Helibaby's instructions, I copied both G-Force_JMC.x64.dll and vis_main.dll from the MC31 Visualizations folder to the MC32 Visualizations folder in /Program Files
I found that regsvr32 has to be run as Administrator
I also realized that I needed to include the quotes in the regsvr32 command line, per Helibaby's instructions "C:\Program Files\J River\Media Center 32\Visualizations\Aeon_JMC.x64.dll".
I have G-Force Gold instead of Aeon, so I substituted above accordingly, i.e., "C:\Program Files\J River\Media Center 32\Visualizations\G-Force_JMC.x64.dll"
Using regedit, after exporting the MC31 entry, I learned (never done it before) that to edit the path to point to MC32 I had to right click the exported entry. I could then edit it with Notepad then save as a renamed registry file.
I had to manually add a G-Force key to the MC32 /Plugins/ Display folder in the registry before importing the edited and renamed registry file to the correct MC32 path.
When all that was done, like Marko, when I launched MC32 I got a major error MC message. Per Marko's post, i found that just needed to rerun the MC32.0.6 installation program.
When I ran MC32 again, the G-Force visualizer was installed and worked normally.
Thanks again, Marko and Helibaby!