pull updates for tag_utility into master

Enhancements were made to tag utility in the course of working on
the vmc_sonos_customizations stuff: there was a bit of refactoring
and the interactive edit feature was completed.

The test_sound.mp3 file was added just to avoid having to manually add
it when testing/developing. (laziness, sorry)
	modified:   tag_utility
	new file:   test_sound.mp3
	new file:   ../lib/media_editor.rb
	modified:   ../lib/tag_munger.rb
copied comments from the old monolithic file into the new object
oriented file.
WWL 2013:
SonosShareList.txt --update to match shares used with BarryLibrary
updateFromMastserWWL.sh --remove junk at end to fix last commit
beginning work on pulling code into the customizations class.
makeSonosSharedLinks.sh -- add 3Day_EN, tested on dhara-av1-nas
makeSonosSharedLinks.sh -- add Satip_EN, 10Day_EN, tested on dhara-av1-nas
updateFromMasterWWL.sh -- modify copy of WWL somewhat to simplify path to Workers Metta
tag_munger, fix_lib.rb and lib_munger all working

lib_checker script parses yaml file output of browse command.
checks for expected album names and reports on potential
problems.

Checks for correct album tagging in standard course files as well
as our special album files (special chantings, group sittings, etc).
Should change the reg expressions to read in from a YAML file instead
of being hardcoded but this will do for now.

Should refactor fix_lib.rb, vmc_sonos_customizations and lib_checker so that they pull their
album titles from a YAML file (the same yaml file, so that album
names are not hard coded / lib_checker won't fail if album names are
changed in vmc_sonos_customizations.