If the user runs sndconfig and cancels before completely
configuring the soundcard, sndconfig renames (but does NOT
replace) /etc/conf.modules.

This occurs on my system with sndconfig-0.27-1.  I have
a Dell OptiPlex GX 1 with a Crystal CS4236 sound card.
when I run sndconfig, it identifies my sound card, but
if I cancel and exit before the configuration is complete,
my system is left without /etc/conf.modules (which is
a disaster on the next reboot).

SOLUTION: sndconfig should COPY /etc/conf.modules to
/etc/conf.modules.bak instead of RENAMING it.  Then,
if the user exits before sndconfig replaces
/etc/conf.modules, the original configuration is not lost.