Should be all nonfunctional changes (yes, even those "else" branches that look like they change behavior; functionally speaking, those branches shouldn't get hit because FSO will delete the sounds when they shouldn't apply).
git-svn-id: svn://svn.icculus.org/fs2open/trunk/fs2_open@11322 387891d4-d844-0410-90c0-e4c51a9137d3