I suspect that this parsing code is still deeply suspect, but I do not have the time to fully investigate
the problems it may have. This commit fixes a very basic bug, and allows program change messages to
be passed through to higher levels in the software
This follows the letter sent from Waves Audio Ltd. to Paul Davis dated February 20th 2014 agreeing to release this code
under the GNU Public License, version 2, with copyright owned by Waves Audio Ltd