@CJ: Bug reports are awesome! Your bug reports have been a major part of the reason that VJ's accuracy has gone up.
@Saturn: BTC isn't all that complicated, especially if you use something like Coinbase to buy it. I would embed a link to a merchant account with them (like the Humble Bundle guys do), but I really don't want to get in bed with 'em.
Updates on VJ have been slow, mainly because of, uh, shall we say, real life challenges. All that's holding up a real release now is finishing up the controller configuration, and I can do it the way I want now by switching to SDL2 (hotplug support--w00t!)--which will require a slight rewrite, but nothing too hairy. Just need to get time/motivation to do it.