If I own Queen’s Greatest Hits on CD, I can rip that, encode it to MP3/AAC/FLAC/whatever, copy it between my laptop/desktop/phone. That’s fine.
If you also own Queen’s Greatest Hits on CD, then… I cannot give you any of those files, because they have ultimately come from my CD, not from your CD. Even though the bits are identical. The provenance matters. You have the right to use the copies from your CD. You do not have the right to use the copies from my CD, even though the bits are the same.