OS X version 10.9.3, The usb VR is an anybest. And all it says to do is plug it in and double cliq on the icon and it supposed to play back I think there talking about a pc! when I cliq on it it says open I cliq open and there is no content. This is what the add says Ultra-portable 16GB huge storage device.,Supports WAV format;Built-in flash memory; Windows / Mac compatible.,Recording bit rate:384kbps,recorder the highest recorder quality.,Playback function; Plug-and-play ,no drive need.,Great for conferences, meeting, lectures, classes, and many other events.Thanks Bob