Problem with sound card NeoMagic 256AV

["Scaramelli Marco" <mscara ascom it>]

Hi,
I can't configure my sound card in red hat linux 6.1.
A Dell document said to me :
UPDATE 9/15:Thanks to Peter Vancorenland for the information that
enabled me to get sound working on my CPi A!
            There is a kernel patch from the people at
http://www.uglx.org/sony.html that compiles into a kernel modules (no
paid OSS
            license) that supports full-duplex (simultaneous record and
play) with the NM256AV chipset! There are different versions of
            this patch--I recommend that you get the one from uglx
(version 0.75). (Information specifically related to Sony notebooks
            can be found at http://www.weitz.de/vaio.html.)

            Here is a summary of what to do after you've downloaded the
patch to /tmp:

                 cd /usr/src/linux
                 patch -b -p1 < /tmp/sony-patch-2.2.11 2> out (The -b
option will make a backup of your original files.)
                 Check the out file to see if you got any error
messages.
                 make config (or menuconfig or xconfig) and configure
sound and the new NM256 driver.
                 Compile a new kernel and new modules (as described in
HOWTOs).
                 Edit your /etc/conf.modules file. All that is necessary
relative to sound will be:


                         alias char-major-14 nm256

                         post-install nm256 /usr/bin/aumix -v 100,100


                 (The last line is optional. You can use a command of
your choice after "post-install nm256av" to automatically set the sound
volume to
                 your preferred level.)
                 If you have the following lines in /etc/conf.modules,
you'll have to comment them out (or delete them):


                         #alias char-major-14 off

                         #alias sound off

                         #alias midi off


                 now doing:


                         insmod sound

                         insmod soundcore

                         insmod nm256


                 if you're not using version 0.75 of the patch, you'll
have to replace all references to "nm256" above to "nm256av".
But when I do this command patch -b -p1 < /tmp/sony-patch-2.2.11 2> out
the OS said to me that it didn't find the file
to replace and the out file is empty.
What I have to do ?
Thanks
Marco