There are posts asking for a GUI to control volume for OpenBSD. I wanted the same and wrote an 85 line TCL (8.5) script. It calls sndioctl, has a volume slider and mute button, sized for touch screen convenience. I use it every day.
I am ok with just posting here, for users to copy and paste. It could be a port (maybe the smallest port ever). I know there is an introduction in the FAQ for ports and I have zero experience creating ports. Seems like it would need a brief man page. The script may stop people from asking about it... Suggestions for the best way to contribute this tiny script to OpenBSD?
