Audio device not present warning only issued once.
Audio device not present warning only issued once.

svn path=/trunk/libavg/; revision=9334

libavg/libavg,hoodie/libavg,hoodie/libavg,hoodie/libavg,scotty007/libavg,libavg/libavg,yyd01245/libavg,libavg/libavg,libavg/libavg,th3infinity/libavg,yyd01245/libavg,yyd01245/libavg,scotty007/libavg,yyd01245/libavg,th3infinity/libavg,hoodie/libavg,scotty007/libavg,th3infinity/libavg,th3infinity/libavg,scotty007/libavg