Switching LMS from Mac running Yosemite to VortexBox running Linux

I think you should go back to the very basic question and explain to us
what is not working. According to your first posting iPeng can see your
players. Your players show up on mysb.com. From your description
everything seems to be ok.

Except for the "The system is usable but if I want to leverage some
plugins I believe I need to be connected to MySB.com."

What makes you think so? What are you missing?

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Michael