I am one of those happy taskwarrior users. For more advanced recurrence syntax in taskwarrior there’s also the relatively new nautical extension. It essentially splits recurrence into things that recur based on calendar/clock events (e.g. every first workday of the month, every second Sunday, etc.) or based on previous completions (e.g. do something 3 days after last time, or every x hours after last doing it).
It’s pretty neat and functional but, fair warning, also early on in development and changing quite radically through its versions still.





Just throwing another alternative out there which I’ve been very happy with: lissen - ‘Clean audiobookshelf player’.
Has streaming/downloading for offline listening, sleep timer, custom bookmarks and custom speeds. Just the browsing functionality is at best ‘functional’ (nice search but if you don’t know what to listen to next just gives you one long list sorted by title)