johndyer/mediaelement — pull request #560 by lftl (2012-07-12 17:34:07+00:00)
Title: Use inArray rather than indexOf in getTypeFromExtension to support IE < 9

IE < 9 doesn't support indexOf for arrays, so it will through a method not supported error when searching for the extension in the type array. Switching to jQuery's inArray should fix this.