Thanks for the response, guys.

Yes, we do have a table - and while I imagine I could probably put my books for sale for some of them, I couldn't for all of them. This is for two reasons. One, we play folk/bluegrass, so they're not as likely to want to buy Fantasy. Not saying it's impossible, though. And two: we play at a lot of conservative places where some people would not approve of Fantasy. Especially ones with magic in them. (Even though the "magic" in my story isn't actually magic. It's an alternate science.)
So I guess a better question then the one before, to start, would be: How does one go about promoting a book, regardless of mobility? How have those of you, who have self-published, promoted? Or, if you haven't been published, do you have any ideas?
Then I'll try to adapt them...