These are the changes made from the original vorbis.com source RPMs.

libao:

- edit spec file to remove build dependencies on alsa-lib-devel.
- edit spec file to remove build dependencies on arts-devel.  This is only 
needed for 7.2; I should figure out a way to allow this dependency to 
remain in 7.3.
- edit spec file to remove "libalsa09.so" from %files.

libogg:

- no changes

libvorbis:

- no changes

libvorbis-compat:

-create libvorbis-compat package, which is a modified version of the 
redhat 7.3 libvorbis package.  It is modified to have a different name and 
to NOT include the libvorbis.so.* libraries (which would conflict with the 
newer package).

vorbis-tools:

-no changes (note, RPMs must be built separately for 7.2 and 7.3 because 
of libcurl dependencies).