Q: itunes 12.1 broke 5.1 surround with creative CMSS

Hi everyone,

something strange happened recently. I have a windows 8.1 laptop connected to a Creative X-Fi 5.1 usb soundcard. Until the last update (12.1) itunes just played fine through all my speakers, given the settings i have for the "creative cmss 3d", basically a software trick that upmixes every stereo output into 5.1. Now though itunes just plays from the front speakers, even if that setting is enabled in the creative console. Every other program (windows media player, vlc) plays fine. This is getting annoying, because i have 10k songs in my library and love my itunes eq setting. Is there a fix for this? I saw old threads concerning this problem with itunes 7.