Is “resume playback” of an audio file (music or spoken word) a feature that will come in the future, or is there some way to activate that feature currently (like is already active with video files)?
There is no OnDeck like there is for movies, but PMS can track the progress. This is a library setting. Check the advanced settings for your music library.
Edit - To be clear, this allows tracks to be resumed.
Early 2021 clean-up: implemented (advanced music-type library setting: Store track progress)