Update! 1) Screenshotting works! See attached image. Though I may have messed up on the command or my keybind for screenshotting the currently active window. But pressing PrintScreen dumps a timestamped PNG image into ~/Pictures/Screenshots like I wanted. And unlike xwd, this can capture programs like Discord! I used maim to handle the capturing. 2) I think I got audio controls working as well! Turns out PipeWire comes with the CLI tools I needed in the form of wpctl. 3) Migrating to pcmanfm is going to be a lot of effort :blobfoxgooglyholdingitsheadinitshands: still just using Dolphin right now. 4 and 5) picom is now doing the compositing for dtwm, and this seems to have stabilized Discord as well as deal with the tearing issues. Hot damn!