Riptide Audio Drivers Problem

Hi, I just download and installed riptide-0.6lnxtbeta03122800.tar.gz
on a PC running CentOS-3.3 with kernel 2.4.21-27, but when I run
ripconfig I see the following results:

......
Re-compiling RIPTIDE modules for kernel 2.4.21-27.EL, using source
directory
/lib/modules/2.4.21-27.EL/build. Please wait..
Re-compilation and installation of RIPTIDE modules succeeded.
depmod: *** Unresolved symbols in
/lib/modules/2.4.21-27.EL/misc/riptidelow.o
depmod:         opl3_init_R1afd20ac
depmod:         attach_mpu401_Re2c3e63d
depmod:         unload_mpu401_R5febf284
depmod:         probe_mpu401_Rcd91465c
depmod:         opl3_detect_R67481767
depmod: *** Unresolved symbols in
/lib/modules/2.4.21-27.EL/misc/riptidesound.o
depmod:         mpuintr_R57ca69ca

RIPTIDE module configuration completed.

And if try with: insmod riptidesound
I can read this:

Using /lib/modules/2.4.21-27.EL/misc/riptidesound.o
/lib/modules/2.4.21-27.EL/misc/riptidesound.o: unresolved symbol
mpuintr_R57ca69ca
/lib/modules/2.4.21-27.EL/misc/riptidesound.o:
Hint: You are trying to load a module without a GPL compatible license
      and it has unresolved symbols.  The module may be trying to
access
      GPLONLY symbols but the problem is more likely to be a coding or
      user error.  Contact the module supplier for assistance, only
they
      can help you.


Finally, I can't hear nothing from my soundcard :-(
Any suggestion, tip, etc.

Thanks in advanced.

-- 
Alex Escalona