Get more URLs to work

* The current version will not return mediaobjects for all URLs(especially video URLs), this update tries to fix that
* This update will also find more FLAC sources for audio URLs

New Internet Archive channel: https://github.com/meriko/InternetArchive.bundle is dependent on this update since otherwise most of the video URLs won't play(or play with quite low quality), and also a lot of audio URLs(like Suspense, which was requested by Institute11 in this forum thread: http://forums.plexapp.com/index.php/topic/77105-internet-archive-plugin/?p=441733)

Note!
It seems that Plex/Web has trouble getting transcode for FLAC files but the same problem is found in the current version(tested using LMA channel). Since this update will enable a lot of more FLAC files(which was returned as MP3 before), it might be a problem for Plex/Web users so I placed the MP3 file first in MediaObjectsForURL to solve that problem.