Was no problem with the firmware 2.0. You could simply browse the share and play files with srt on a mediaplayer (f.i. Zyxel or WD HD). Since the new update this doesn't work anymore. On DLNA with this DNS-320 it's not possible (also no ifo files so no DVD files).
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If you didn't update above 2.00 yet. stay on your current version !!!