Sonos Presented Library based on Folders?

[meteorite21]

First I should say that I have just installed trial version (6.0 beta for windows) with the view to see if it solves the problems with Sonos's very poor local library support. I have had Sonos for almost a decade and have given up waiting for the company to care about its local library support - they care only about enticing new customers thus adding music services and prettying up the UI. So I am attempting to use the Subsonic software as a service with Sonos app as the controller.

Honestly, I did not expect very much having seen other UPnP service attempts to integrate with Sonos. In fact I was very pleasantly surprised that this software looks extremely promising. Great work by the devs! If some of the few issues I have can be resolved I can certainly see my self parting with the lifetime fee.

Looking at the "Browse Library" functions, I immediately have hit a number of issues (eg {disabling mp3 transcoding does causes the playback to break; no option to view/search by Composer; no keyboard first letter access to move down browse list} but I think I will split these into their own posts later).

As my first post I would like to ask most importantly why in particular it would appear that the browse library is presented based on what appears to be a flattened directory structure. By that I mean that it seems that folder names form the index key in the browse list of Artists (rather than what I would expect to be the "Album Artist" ID tag). When searching I see results for all folder names (eg even including Artwork folders) all presented at the same hierarchical level - thus giving me many matches to sub-browse through. Am I understanding this correctly? If so I can see the use of a folder based browse (As Sonos also offers this), but then it should be an optional method and should be hierarchically browseable for it to be useful.

<EDIT>

The browse view seems to only include the folder names if they have some music oriented sub-folders/files, but the search shows all folders (and you can't search at all for mixed Album Artists that are tagged in within a shared folder - which is how I tag my various/mixed artist albums).

I can see that the Artist list in the Subsonic web app appears to use "Album Artist" tag, so this folder approach is apparently a Sonos interface thing only.

I could try the non-beta version but I don't want to go through that if this is an expected behaviour by design.

Anyone have any thoughts on this matter?

[meteorite21]

Ok it seems I was mistaken regarding this being specific to the Sonos interface.

The Subsonic index solution in general appears completely oriented around only Artists, Albums, Songs but somehow combines "Album Artist" with folder names when giving Artist Lists. And the search picks out folders that have no music in them. All very odd.

So

1) how to locate particular Artists within various artist albums without using the songs based index search which also pollutes results with song title matches?
2) how to avoid art/info/non-music folders coming up in search result?
3) how to avoid multiple folders with exactly the same-name matching a search being listed as separate containers (so that each has to be inspected separately)?

It seems at the moment the Sonos interface could be good but the basic indexing design of subsonic might be too inflexible to use without completely changing folder structures to suit and even then giving no easy access to various artist based searching nor Composer based searches.

Anyone have any thoughts?