How COMPLETLY uninstall BSplayer?

I use BSplayer since a long time ago and yesterday i met a problem with my player. I don't know why, when i try to click on play with my mouse my player go out my screen! So i can't use it anymore. I try to uninstall and make a new install of bsplayer but the computer remember a few information like the path and the position... so i'll want to know i can completly uninstall this program!
Thanks