LINE6_STREAM_MONITOR
err = line6_pcm_acquire(line6pcm, LINE6_STREAM_MONITOR, true);
line6_pcm_release(line6pcm, LINE6_STREAM_MONITOR);
line6_pcm_release(line6pcm, LINE6_STREAM_MONITOR);
line6_pcm_acquire(line6->line6pcm, LINE6_STREAM_MONITOR, true);