+1
An interesting idea that maybe deserves a little more consideration (I also use Musicolet, although infrequently).
Right click >> Edit >> Settings [tab] >> [check] remember playback position
Not sure if this setting applies to AudioBooks or only standard music files though.
This is actually MusicBee's default setting for both audiobook and podcast files and works well when stopping and restarting a single track. However with multi-track audiobooks (or stand-up comedy, spoken word albums...) it does not remember which track you were on in the 'album'.
You may also have cobbled together a Playing Tracks list which you want/need to stop, listen to something else, and then come back to at a later time - admittedly, you can save the list to a new playlist when stopping but even then you will still lose your position.
How Musicolet acts here (this may need to be corrected):
Whenever you stop playing, the Playing Tracks list (queue) is automatically saved along with your exact position in it (both track# and time in that track).
It will save the most recent 20 queues, after which it will over-write the oldest. You can pick any one of these 20 and load it back up at any time, picking up exactly where you left off.
So maybe something similar, but probably more suitable for the MusicBee platform would be to have a limited number of slots to manually save (via menu/hotkey/toolbar button?) the current Playing Tracks list, along with the track position and play time in it. The theory being that any one of these could then be reloaded at any time so that you could continue where you left off.
It's just a thought.