I wasn’t sure why you responded with this link because I’ve already indicated I was able to add all my music and video sources without much trouble. It’s the AIF I’m having trouble pointing OSMC/Kodi to.
However, it prompted me to go back to the Kodi Wiki page about the AIF, which I probably should have added as a bookmark by now: https://kodi.wiki/view/Artist_information_folder
From that page: The folder can be named in whatever way suits you and located with, or away from, your music files. We recommend away from your music files. Once a folder has been created on your file system, set it as the Artist Information Folder in either one of two ways:
- In the settings page here… See: Artist Information Folder Setting, or
- Via the Settings button on the Add to Library dialog that is displayed when you add a new music source. See: Adding Sources
Now, I had been trying the first method because that’s the only one I knew about, and, honestly, it’s more intuitive, at least to me, because I think of it more as an information source than a music source. Anyway, I tried the second method, and I was able to direct OSMC/Kodi to add it as a source. Note that I had already added all the video and music folders on my NAS using Settings>File Manager. I should also note that it now appears under Music>Files (where I added it) but not under Music>Sources, which kind of makes sense, considering it contains no actual music.
At this point, I was hoping I had solved my problem, but I soon found out I had not. When I went to Settings>Media>Music, I saw that the AIF location was still the one on my USB drive, and just as before, I couldn’t change it to the one on my NAS. I also couldn’t change the location in the Artist Slideshow add-on. So I’m basically back to where I was, having to use a USB drive for my AIF, while being able to use my NAS for all my music and video.