td><font face="Times">NXPlayStream represents sound that's sent to sound output (the speaker, line-out jacks, and headphone jack).</font></td></tr>

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<td><font face="Times">The utility of NXSoundStream is invested in these subclasses; the NXSoundStream class itself simply defines methods that are common to them.&nbsp; In addition, you can't create useful subclasses of NXSoundStream yourself.</font>

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