Hi Sofaking!
Welcome to Darkside, its just a great place. As far as Kvcd's I can tell you how to play them, I actually have problems burning them, perhaps someone else can lend a hand there.
I suggest you download "VLC"
VLC
I use it all the time as an alternative to Quicktime Player. Once you download it, just drag and drop either the Bin file OR the Cue file. Either will work.
Best regards,
Kal