QString DSPDeviceSinkEngine::errorMessage()
{
	qDebug() << "DSPDeviceSinkEngine::errorMessage";
	DSPGetErrorMessage cmd;
	m_syncMessenger.sendWait(cmd);
	return cmd.getErrorMessage();
}
QString DSPEngine::errorMessage()
{
	DSPGetErrorMessage cmd;
	cmd.execute(&m_messageQueue);
	return cmd.getErrorMessage();
}