How to turn Android tablet into network photo frame?

I have a qnap NAS which shares media via samba shares and upnp (dlna/twonkey). I'd like to run a photo gallery app which displays shared photos so I don't have to copy them to my tablet. No luck finding a DNA client that has a decent photo gallery yet... also couldn't find an app that lets me mount a smb share like smbfs for Linux.. any other ideas? Launching needs to be very simple.