The audio sample data is pretty low bandwidth, CD audio is ~150 kB/s. Latency is fine for real time too, but even if it wasn't, this is streaming media playback

The audio sample data is pretty low bandwidth, CD audio is ~150 kB/s. Latency is fine for real time too, but even if it wasn't, this is streaming media playback which tolerates relatively big delays in the pipeline as long as you keep a/v sync.