Fix some Skype chat parsing issues.

props wonderboymusic. see #23625.

git-svn-id: http://core.svn.wordpress.org/trunk@23978 1a063a9b-81f0-0310-95a4-ce76da25c4cd
Use ID3 data for audio and video

fixes #23926. props wonderboymusic, SergeyBiryukov, johnbillion.

git-svn-id: http://core.svn.wordpress.org/trunk@23979 1a063a9b-81f0-0310-95a4-ce76da25c4cd