If you happened to use Windows Media Player and forgot to uncheck the "Protect My Content" box then your content is protected and should not play.
There is a bit of a misconception about "bought and paid for" vs. "licensing and DRM." For example many thought their "bought and paid for" DVD was free to put onto their PC Share Manager. This is far from clear to most owners. They may need to catch up with licensing and more.
And look at my first sentence where ripping it ourselves can result in locked content unless we are very careful.
--> Don't fret, this is a deep subject. Take it slow.
I have yet to successfully play any of the files I am sharing through Samsung PC Share Manager. I can see the files, they start to play and issue a "Not Supported File Format" message. I ripped some of my child's DVD's to avi (xvid/mp3) and none of those work on DLNA or USB. To dumb things down I just shared a file full of mp3 I ripped (tried VBR and CBR and kbps from 128-320) and got the same message. I notice in the user guide a line that vaguely insinuates that "It might not work with unlicensed media files." I certainly hope that stuff I own and paid for is not being tagged as "unlicensed" but I am afraid it is. Is there a workaround for this or is having the share manager just useless unless you actually purchase media online instead of hardcopies and ripping them yourself?