Plexamp - sweet fades query

That’s not exactly what I asked.
Did you use the command “Add to library”, so that specific Tidal content does show up as regular media in your local Plex music library?
Simply adding a Tidal subscription to your plex account doesn’t do this.

No, this cannot be seen in the media info. You can only get a glimpse at the process if you look at the plexamp logs afterwards.
You can quickly check the difference if you build yourself a play queue. First add a pair of tracks which you know they have a rather abrupt end and start.
Then add another pair of tracks which have a very slow fade out and a very soft start.
Now play both track transitions.
You should be able to see (well, hear) quite well what I mean.

Yes, unless you use “album radio”.