Works for me, but woah not very mac-like user experience. I cannot just drag the flv to the dock-icon, i have to "choose folder" in the application. And you cannot resize the window. Only make it full screen by clicking the green +button. That makes the app look weirder though.
But, it does show me my flv's... And it's free;-)
So thanks to the developer for making the effort;-)
Well... on a scond thought... It made my CPU go quite high, even though not playing anything. Not cool.