seems that you don't have the openal-libs in your ld-path. Try following:
ldd pfx2, and look whether you get:
libopenal.so.0 => not found
If so, look where openal installed it's libs to, and do one of the following:
* export LD_LIBRARY_PATH=/pth/to/the/dir [use setenv if using csh]
* add that path to your /etc/ld.so.conf and do a /sbin/ldconfig [as root]
Hope that helps,
ts