Firstly let me add my thanks for this plugin
I have been using Calibre to store and manage my audiobooks (in a separate library) and wondered if you had given any thought to some small adaptations to the plugin for Audiobook needs.
Specifically, most Audiobooks are split into two, three or more 'books' (when in m4b format). This is because the iPhone, and possibly other handheld devices, don't cope very well with single large audiobooks, even though these play well enough on a desktop (PC). On a smartphone they play, but are silent.
The request I have is for a way to be able to specify the series without numbering increasing. e.g. Select three book and label each of them (e.g.) Bolitho [1]
The attachment shows two different ways I have set up series details in my Audiobook library in Calibre - Still undecided which to stick with...
There may be other things that could be done, or better ways of doing this, so I just put it forward as an idea.