Playing DSD files from a memory stick

Hi all,

So I just got Diana Krall, The Girl InThe so Other Room DSD download and I put it on a memory stick along with a Flac rip of the CD.  Both play well on my HT system, both the on the Sony Blueray and the Denon AVR.

When I plugged the stick into the Oppo in my primary music system, I listened to the first cut of the regular CD and it played just fine, but when I tried the DSD file it wouldn’t see it.

So my question is,  what would be the next logical step so I can listen to DSD files on a memory stick on my primary system?

Thanks in advance 

JD