audio
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... the software that interprets them. It is useful to distinguish them,
at the highest level, from such unreadable data as images, audio, or
text represented in an unreadable form. In the absence of
appropriate interpretation software, it is reasonable to present
...
... Audio Media Types ...
... mixing of multiple media in a single body, it is recognized that many
so-called video formats include a representation for synchronized
audio and/or text, and this is explicitly permitted for subtypes of
"video".
...