Added ogg to accepted formats
Added ogg to accepted formats


ghub/osg,artoolkit/osg,stmh/osg,XiaoCC/osg,koshman86/osg,koshman86/osg,omega-hub/osg,XiaoCC/osg,stmh/osg,artoolkit/osg,XiaoCC/osg,ntoand/osg,XiaoCC/osg,omega-hub/osg,ntoand/osg,koshman86/osg,ntoand/osg,ghub/osg,artoolkit/osg,stmh/osg,artoolkit/osg,stmh/osg,ntoand/osg,koshman86/osg,XiaoCC/osg,ghub/osg,omega-hub/osg,omega-hub/osg,ghub/osg,stmh/osg