Please try to get the newest version of ALSA driver (link below), and follow the instruction in the document
Matrix:Module-emu10k1 - AlsaProject
After installation don't forget to set the first audio device in System Settings to "ALSA". If needed you may also have to change mixer in some audio programs (for example Audacious) from the default main-board sound card into "Audigy ZS 2 Notebook" manually. Enjoy your music through emu10k1 then!