Hello! I no longer have any audio after upgrading to the latest firmware (15.17.01, dated 4/18/2015.) I have re-tested with a hand-held laser tester, and all seems to be working OK there. Any ideas on restoring the audio? Also ... any clear (easy to read, follow) instructions anywhere on how to create custom audio clips? (I have seen what's posted in this forum, but it's very cryptic and nearly impossible to understand.) Thanks in advance.