Fixeds the gradle dependency line. Also added in Javadoc links for the
various support classes and methods, and other minor cleanup. See
first comment for doc stage location.
bug: 18439090
Change-Id: I7ccc892f38a644d68abc6d56d8d4377df5f864b0
Doc was previously titled "Building Android Media Apps"; per request,
changed "Media" to "Audio" whenever possible, and moved file location
accordingly.
See the comment after patch set 5 for the updated staging location.
Change-Id: I0d657851d44b46cdfb1b5806a51dad0565312c04
