Buffalo Media Player LT-H90 User Manual page 15

There are two options for adding media:
Add - By pressing the Add button, you can specifically pick a
directory on your computer to share with the LinkTheater. If you
wish to add multiple directories, then you can add them one at a
time by repeating the process.
Auto Search – Auto search launches a wizard that will help you
automatically find your media.
Press the Next button to continue.
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