One of my big flaws with the VLC media player is that you can’t use the arrow keys to skip backwards and forwards in a video. It turns out that this is because the left and right arrow keys are already configured to mean “navigate around a DVD menu” and you can’t configure a key twice. So, if you need to use VLC for something, and you want the arrow keys to work, go into the settings and set the DVD navigate options to something other than Left and Right. Then configure “jump forwards” and “jump backwards” to Right and Left, and then it’ll work. God knows why it has to be this way, but at least if you do that it works.