I suspect that the audio part of the nforce driver from nvidia is taking you down on this one. Try going into the "nvnet" subdirectory and doing a single "make" there. It should compile fine. Then, do make install.
The nforce driver from nvidia has yet a poor installation method. Maybe they'll come with a better installation system, like they do with the NVidia GLX driver.
In all cases, I think you can safely take the tarball and not the srpm because you only want the nvnet part of the driver.