i just bought a new computer. i just bought band in a box 2013. i installed it, and everything worked perfect. an hour ago my computer suggested that i upgrade to windows 8.1 for free. i did. after i restarted my computer, every time i start a band in a box song i get an error message that says "no wave output devices are installed in windows". i hit ok, and it plays fine. how do i stop this error message? i'm sure it's something simple but i can't seem to find my way around windows 8. sorry if this is just dumb of me, but i don't know what to do about it.