sb16_stream_setup_buffers
status_t sb16_stream_setup_buffers(sb16_dev_t* dev, sb16_stream_t* s, const char* desc);
if ((rc=sb16_stream_setup_buffers(dev, &dev->playback_stream, "Playback")) != B_OK) {
if ((rc=sb16_stream_setup_buffers(dev, &dev->record_stream, "Recording")) != B_OK) {