Play/Pause on long-hold volume

I don't know if this exists and I'm missing it, or really is a feature request, but it would be great if this app would allow long-holding one of the volume rockers to play/pause a podcast, so that it can be easily managed while driving or with the phone in my pocket. Currently it recognizes a long-hold as some sort of "Skip forward", but changing the headset fast-forward or reverse hotkeys to play/pause doesn't seem to change it. Anyone know how to do this, or should I send it in as a feature request?

Thanks