No, lyrics are only read from plain .txt and .lrc (timed) files.
.nfo files are not supported at all.
If the library is still using legacy agents, you can install the 3rd-party .nfo importer agents
However, I don’t know if these are still working.
Apart from that, if you have “unmatchable” videos, you want to use the mp4/m4v file container and embed your metadata into these.
