Using Your Linkstation With Itunes - Buffalo LinkStation Live Shared Network Storage User Manual

Using your LinkStation with iTunes

Your LinkStation may be used as a music server for computers
running iTunes. As long as PCast's Media Servers function is
enabled, the Media Folder ("Share" by default) will appear in
iTunes on computers on the same subnet.
All music files in the Media Folder will be visible from within
iTunes 7 or later. Music files stored in this folder will be playable
from up to 5 computers on the network.