MP3 Decoding failed: Lost sychronization

Audacity 2.4.2 is very fussy about MP3s. They have to strictly conform to the MP3 standard, otherwise Audacity will refuse to import them. This increased strictness was to fix a problem with non-standard files being misidentified. The next version of Audacity will be less strict / more forgiving about MP3s, so we should see a lot less problems of this sort.