Myst MSND resources
MSND resources store Myst's audio data.
In the original Myst, MSND resources contain standard Mohawk Sounds.
In the Myst Masterpiece Edition, MSND resources hold standard Windows WAV data instead.
It is interesting to note that all MSND resources in the whole game are named except for INTRO 1 (the linking sound). In all the other packages, this sound is labeled "transprt7" (in MYST) or "transprt1" and "transprt2" (which all appear to be the same, although transprt1 and transprt2 are separate resources in the package).