[DCP-o-matic] DCP playback

Hi there, I am new to DCP's and this list,–very likely like many others before–having been thrust into this world by the need to deliver a film to a movie theater in their preferred format. Above all my monster is a little over two hours long, with a 5.1 soundtrack ;-) Being a Mac person (up to this point…) I got a trial version of a commercial player to test DCP playback. Waiting for my refurbished renering machine that can run Windows I also signed up for digitAll dcpPlayerFree, but what I realised is that I would not need so much functionality for peace of mind. Would it be possible to create a free DCP-player that read a buffer of like say 5-10 sec worth of images and sound, generated a temporary movie file for playback using a local architecture, like QuickTime on the Mac, and then played the segment? The user would use the slider to determine where to start. The great advantage would be that one could check the file from within DCP-o-matic, including encrypted media, which is a function reserved for the pricy commercial players. Cheers, Andrew