To setup a Sound, you ask the SoundCache for it first. This will return a Sound object.
var latinSound = SoundCache.getSound(HIFI_PUBLIC_BUCKET + "sounds/Lobby/latin.stereo.raw")
This either downloads the sound for you or grabs it from the cache. Note that because raw files do not include a header you have the option to name them as “.stereo.raw” to indicate that the file is stereo.