If you have the Solid State USB card you might want to scan the QR code.
There's not a spoiler tag that I can tell...but if you want to see here's the link for those who don't have a scanner (or the USB card)http://q-r.to/bajA9B
The README.txt says..."(Are there other bonus tracks somewhere? Maybe.)"
If you don't want it spoiled...don't click the link