PARA_ERROR(AO_PLAY, "ao_play() failed"), \
PARA_ERROR(AO_BAD_SAMPLE_FORMAT, "ao: unsigned sample formats not supported"), \
PARA_ERROR(AO_PTHREAD, "pthread error"), \
PARA_ERROR(AO_PLAY, "ao_play() failed"), \
PARA_ERROR(AO_BAD_SAMPLE_FORMAT, "ao: unsigned sample formats not supported"), \
PARA_ERROR(AO_PTHREAD, "pthread error"), \