My laptop keyboard does not have media shortcut keys (e.g. "Next Track", etc). I frequently use the laptop connected to an external keyboard, which does. I go to Settings->Keyboard->Shortcuts tab, and select "Sound and Media", and I see that "Next Track" is bound to the shortcut key "audio next". I see that I can replace this with a custom key binding, but it overwrites the "audio next" shortcut.
I'd like a solution that allows me to map a second shortcut to this command without overwriting it. I see that I can define custom keys, so I could make a unique mapping for
rhythmbox-client --next, etc, but that would be a solution specific to rhythmbox. I'm looking for a more native Ubuntu solution that will work in any player the same way the current "audio next" media keys do on my external keyboard. Any ideas?