Originally Posted by POD GOD
Unfortunately, Line 6 has never released that info and, as far as I know, it hasn't been cracked. I think it would be great if they allowed others to make lesson files with tabs and tone, but for some reason, they won't.
I think, the answer is: money
Someone at the guitarport forums said he could make the files work in internet explorer with limited functionality. I also think it's some browser enhanced file.
and thanks for the quick reply.