cd1 cd2 show as 2 albums in album view
That's exactly what should happen if your discs are in separate folders. That's what defining an album as all files in one folder does. If you want them to appear as one album, all tracks must be in the same folder or you need to use the other option of defining an album.
No, no, where could I find that computer node?
Display MB in full-screen, then move your mouse cursor to the left side of the screen and leave it there until a panel pops out from the left side. Click on Computer, that's the node.
I assume,those means the same. I have done that:
The option you have selected in the screenshot does not group by folder (path). It groups them by the Album Artist tag and then the Album tag in the metadata of your music files regardless of the folders they are in.
How could I group the panel on the left by path now? Where can I find: "that are available from 'Sort By' menu"?
When you reveal the left sidebar (by moving your mouse to the left) you can use the computer node as I already described to navigate your folder structure. There is a little pin icon at the top right of that sidebar that allows you to keep it visible at all times if you want.
The left panel in your screenshot doesn't support folder navigation unless I am mistaken.
Where can I find: "that are available from 'Sort By' menu"?
Check out Sorting under Sorting & Grouping in the wiki.
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