Its free for a reason
I used both this version and the one that the Javelin S4 NAS offers (same app) both seems to behave the same way. Most of the time it wouldnt see any servers unless I refreshed several times. Then, after selecting a movie or song to play it would just bomb. It worked a few times but I was never able to listen to a whole song or watch a video to completion.
I ended up sending the Javelin back as well. They are both nice products that might be ready for prime time soon but not quite there yet.
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SmartStor Fusion Stream DLNA Digital Media App