Fix a crash problem in AudioEngine due to class name change.
Fix a crash problem in AudioEngine due to class name change.

Change-Id: I18a831ffc692b5aa6de6e2626f0dc916eb57c8b7
Reviewed-by: Michael Goddard <3ec82c9d770214b86c58e0ffe200ac64c3ff8da3@nokia.com>

nezticle/qtmultimedia,nezticle/qtmultimedia,mer-qt/qtmultimedia,webOS-ports/qtmultimedia,mer-qt/qtmultimedia,nezticle/qtmultimedia,webOS-ports/qtmultimedia,nezticle/qtmultimedia,mer-qt/qtmultimedia,jfaust/qtmultimedia,nezticle/qtmultimedia,webOS-ports/qtmultimedia,sergiusens/qtmultimedia,jfaust/qtmultimedia,jfaust/qtmultimedia,jfaust/qtmultimedia,sergiusens/qtmultimedia,sergiusens/qtmultimedia,sergiusens/qtmultimedia,mer-qt/qtmultimedia,webOS-ports/qtmultimedia,mer-qt/qtmultimedia,jfaust/qtmultimedia,sergiusens/qtmultimedia,webOS-ports/qtmultimedia