Fix bug when changing at the same time folder and file load two time the

file
Removed sendDMX() on init
Added dome doc in audiolayerwidget.h
Cleaned comments on olathread.cpp and olathread.h

src/libremediaserver-audio.cpp

@@ -94,7 +94,6 @@ libreMediaServerAudio::libreMediaServerAudio(QStringList args, QWidget *parent)
     ola->blockSignals(false);
     connect(ola, SIGNAL( dmxOutput(int, int, int) ),
             this, SLOT( dmxInput(int, int, int) ) );
-    ola->resendDmx();
     qDebug("Init Complete");
 }