The relative URL passing to the player does fix it. Try clicking here, which is the code coming through on your site:
...
And it works. I'm not sure how to set the modules to use relative instead of absolute URLs (never used them before). Hopefully someone else has an idea.
Well now, one little stroke of genius later and you've got it!
At least now I know what the problem is and I can try fix it. Thank you very much.
F