Concert videos (both clips and full movies) in a single library?

You can always concatenate the songs into a contiguous file.
When doing so, you can make chapter markers aat the former file boundaries. Which you then can use to name the various songs.
This is what I do when adding video collections and concerts into my music video library (type “Movies”).

See File & Folder Naming Convention Issue for DVD Concert Song Files - #2 by OttoKerner
for a bit more detail.