The album is dead?
For years, if an artist didn’t release music as an album, the resulting recording release was called a “single”. Singles have been used in various ways, as “teasers” for an upcoming album, as remixes, and such.
Just because a pop star runs out of steam, or had marginal work to start with, don’t blindly accept the “album is dead” concept, lest we encourage the publication of yet more marginal releases.
Nothing is more disappointing than one or two listenable tracks surrounded by drivel, I agree.
On to the task at hand:
Why would you be annoyed by the Sansa’s display of “unknown” on the screen? It’s a flag lettting you know that the data is missing from the file. Why would you want to sweep the issue under the rug? If it bothers you, fix the tag, allowing you to access that favorite track.