[lkj]

As I recently inherited a huge, well-tagged music collection (tens of terabytes of files) I am very interested in this. Is there something like it, also supporting .cue files and also storing the original filenames and structure? A mediaplayer agnostic way to access this treasure trove would be the best.

[Nadya]

I highly highly highly highly recommend beets [0].

[0] http://beets.io/

[lkj]

Wow! Thank you.

[pronoiac]

I'm not speaking from experience, but git-annex comes to mind: https://git-annex.branchable.com/tips/metadata_driven_views/

[nayuki]

It sounds like you grabbed a copy of What.CD - or perhaps the entire Touhou lossless music collection torrent (2 TB). ;-)