^ share the wall, share the wall
Switched to smplayer2 (in the repos) since it's supposed to be developed for mplayer2. I didn't realize that mplayer2 is a fork of the original project, not a new version:

seems pretty smooth. VSIDO + Fvwm + Kong, the 8th Wonder of the World!
Edit - smplayer2 is a dead project; back to smplayer.