Jarek,
All what you say seems true, but in the end is not because it is related to the "approach" you'd have to have to this all.
First off, there is no such thing as a "Library" and "Gallery"; A Gallery is a (meta data) derival from real music folders, and your Library is the thing you see after choosing the Library Area. So, all is "Library" so to say.
If you have chosen (at the bottom) another "root" - hence the root for your Library at that moment, and that coincidentally is a folder with real music data, what prevents you from a. playing that and b. put things from there (or anywhere !) in a Gallery ? Things are just so unrelated that ... ehhm ... you think they are ?
The other way around, if you have a normal music folder as Music Root, what prevents you from selecting a Gallery (or part of it !) at the bottom text field ? also nothing. But *this* is not logic, because all your music should be under a Gallery Root (hence show in the left pane for standard / default) because ... well, there isn't another way (btw I think W7 can do similar things). So, your Gallery structure must be the base of it all, while you're in the process of having this the other way around, just because you don't have that structure yet.
So let's now mix it ...
Create that Gallery Root, make it your Music Root, and now start asking for your main "music roots" from your several disks by means of selecting them at the bottom text field. Whatever those "music roots" mean to you, they''ll have a name or function. Now, create that name under your Gallery Root Folder, and stuff *everything* from that folder in there (select all the Items in the Library Area - Right Click - Add to Gallery - Choose (or/and create) a Gallery. Now that whole "disk" will be in your Gallery, under that chosen structure. Now do the same for your next disk. Create another Gallery Folder for it, or stuff it under the same as before because you had no other logical separation between the two disks other than "the first was full". Do this with everything you have.
What happened ? now suddenly your Gallery Structure is leading *and* you will see and understand that. Now you also can't have the "problems" you described, because you don't have a reason anymore to hop over to the original disks. All is in your Galleries now ...
At this stage, you have all in the Galleries, but still no logical structure. Think of "demo" which will be a first applicable one for you. So, you create that Demo, and can just do it under your Gallery Root again. Notice that this is parallel to you other disk roots, but also notice it is redundant. I mean, if you'd now ask for the complete Root, your Demo entries will show up twice in the Library Area; one for the Demo and one for the Original. But, this is because you asked for the main root. Don't do *that*, and nothing is redundant.
Once you use everything in full, and you'd have a more normal structure like "Jazz", "Rock" etc. etc., *and* you'd create an additional Root for that (like "MyStructuredGalleries") and under that you put the "Jazz" etc., you'll start working with that root only ... and you'd make it your Music Root.
At this stage we're here :
Galleries\
Galleries\MyDisk01
Galleries\MyDisk02
Galleries\MyStructuredGalleries\
Galleries\MyStructuredGalleries\Jazz\
Galleries\MyStructuredGalleries\Rock\
But you could just as well have created this as :
GalleriesContainingMyMusicDisks\
GalleriesContainingMyMusicDisks\MyDisk01
GalleriesContainingMyMusicDisks\MyDisk02
MyStructuredGalleries\
Galleries\MyStructuredGalleries\Jazz\
Galleries\MyStructuredGalleries\Rock\
which implies two separate Gallery-Roots, not retrieveable in one go (like in the first example you could ask for Galleries\ and retrieve everything and all, but redundantly as hell). This is correct, because you'd get redundant data only.
Notice the "importance" of the GalleriesContainingMyMusicDisks\ in this last example, because it allows you to retrieve all your music data under one "folder".
Lastly for now :
Yes, you can have Tracks in there too, but tracks actually emerge because you ask for them explicitly (fill a T(rack) in that box where now an A(lbum) shows), and the system will *present* you tracks. Of course in the folder structure nothing changed; only now the tracks are shown. So, indeed this allows you to show all the tracks you have in one list, which IMO is not useful for copying them at a track base to Galleries (because you can - and should do that from within the PlayList Area, or the Remote while playing) BUT which is very very useful in just finding a Track (Name), not knowing the Album Name and especially when it's (or may be) on a collection album (audiophile samples etc.). This is just a matter of filling the Track Name (or any part of it) in the Search field near the bottom, and those which match will show up in the Library Area.
Now, to let this work conveniently, you'd have to a trick :
What probebly not many people know, is that you can right click on that button I show in the first picture below;
That gives you this small popup, and it allows you to save the list in the Library Area, no matter how that list got there. This is called "Saved Result Lists". What you'd do is asking for all your Tracks which may take 10 minutes (as in my case, with some 300,000 tracks). Because it takes so long, you'd want to save the result. And, as you see in the second picture, via this same popup you can ask for that Saved result List, and really within one second now the 300,000 tracks appear in the Library Area, ready for you to select from.
Notice that this too is unrelated to the Library Area vs. Galleries, because this just works on the result in the Library Area. As said, no matter how it got there.
Once you're into tricks anyway ... ask for all the Albums you have, type Pink Floyd in the Search box, save the Result to a Saved Result List *or* just select the whole list and save it to a Gallery "Pink Floyd" (think about the structure). In either case you created a Pink Floyd selection within seconds, now ready to be added with other related stuff like : do the same for Roger Waters, David Gilmour, Nick Mason, Rick Wright, Syd Barret - and all you may find related to Pink Floyd. It all goes in a whimp, and in the end you could have a nice Gallery with 120 Pink Floyd related albums, like I have at the moment.
And notice that -yes- this is based upon creating Galleries from Galleries.
Peter