LSNBLDR-216; audio


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/trunk@126179 66ffb92e-73f9-0310-93c1-f5514f145a0a
LSNBLDR-210; document audio support


git-svn-id: https://source.sakaiproject.org/svn/lessonbuilder/trunk@126183 66ffb92e-73f9-0310-93c1-f5514f145a0a