Originally Posted by barba
After I install CollectionsManager the MP3 I have in Music Directory appears and I can put them in a Collection and the player changed.
Is it a feature of Collections Manager?
Also appears two new collectons inside the Mp3 collction I create with the following names: Images and Previous issues.
Both with "nothing included". I try to put a magazine inside the Previous issues but I can't.
What are this collections?
These are so-called "dynamic collections" - their content is "calculated" on demand from the existing files. You cannot do anything useful with them in Collections Manager, because CM sees them as "normal" items, not as collections (and indeed, they aren't
normal collections that you can manually modify). The only thing that you can do to them is change their home screen visibility (and possibly file them into another collection, but I'm not 100% sure about the latter).
PS: Please post such questions in the CM thread, because that's where they belong. (Or, in general: post questions relating to a particular software in that SW's "original" thread). There are multiple advantages of doing so: first, it guarantees that the developer will actually notice your question. Second, the question will be in the relevant thread for others to notice it. Third, it will remain in the relevant thread forever, for others to find it at a later time.