Please see my feature request from seven (!) years ago :-)

 Yes, also one we already have logged :-)

Perhaps a "Consolidate and save/back up"

You bet!!

Please see my feature request from seven (!) years ago :-)

https://community.troikatronix...

Perhaps a "Consolidate and save/back up" might fit better and it saves a copy of the 'izz' project and all 'linked' files. 

"it may not be loaded into a picture / movie player at the moment, but how does Isadora know that you won't be using it at some other point?"

Yes, that's the real danger of implementing this feature; the target of media player actors can be changed programmatically, so while we can tell what is in use, we don't actually have any reliable way of knowing what will be used. We'd much rather people have more media than they need (or manually go through and remove things they don't need) than end up finding out during a show that they didn't think ahead and removed a bunch of media they needed for the performance.

I'll add another +1 to the feature request in our documentation though.

Previous responses to similar requests from me can be summarised thus:  "it may not be loaded into a picture / movie player at the moment, but how does Isadora know that you won't be using it at some other point?"