You can find the RPMs at ​http://www.innovative-dsp.com/cgi-bin/dlLinux.cgi?product=X5-400M .

You can run fakeroot alien --scripts --to-deb foo.rpm to create Debian packages from those RPM packages. They look like whoever packaged 'em didn't really know what they were doing, they were just trying to get something that would basically play on a SuSE machine. I think all you get in any case is some source code to try to compile against your kernel.