There is currently no Linux support for the Blaster Z series cards and actually the Recon3D cards both using the ca0132 sound processor (Soundcore3D).
There is a developer currently trying to work on this via the ca0132 portion of the snd-hda-intel kernel driver however he is missing information that he needs to complete the driver which can only be ascertained by Creative Labs.
The problem is Creative continues to ignore their customers that have been requesting a driver for Linux just for basic sound, in some cases it's been over a year for the Recon3D owners.
While maybe Creative Labs doesn't want to be bothered with writing one even though would probably take them less than a few days the very least they can do is send the required information needed to the open source developer(s) so he himself can complete the ca0132 driver in the snd-hda-intel driver.
With that said it seems that Creative Labs now does not want to even acknowledge there is no Linux support let alone address it. I and others very involved on getting this issue resolved have been hitting a wall no matter whom is contacted at Creative Labs. Not even a single response saying they refuse to help it's pretty much like trying to start a conversation with a corpse.