Mastering Unity 2017 Game Development with C#（Second Edition）

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Importing audio

Let's import game audio--specifically, the music track. This should be dragged and dropped into the music folder (the music track narrow_corridors_short.ogg is included in the book's companion files). Music is an important audio asset that greatly impacts loading times, especially on mobile devices and legacy hardware. Music tracks often exceed 1 minute in duration, and they encode a lot of data. Consequently, additional configuration is usually needed for music tracks to prevent them from burdening your games:

Importing audio files

Ideally, music should be in a WAV format to prevent lossy compression when ported to other platforms. If WAV is not possible, then OGG is another valuable alternative. For more information on audio import settings, refer to the online Unity documentation at: http://docs.unity3d.com/Manual/AudioFiles.html.

Now, select the imported music track in the Project panel. Disable the Preload Audio Data checkbox, and then change the Load Type to Streaming. This optimizes the music loading process. It means that the music track will be loaded in segments during playback, as opposed to entirely in memory from the start of the level, and it will continually load, segment by segment. This prevents longer initial loading times:

Configuring music for streaming