I think "Length" should be "Duration" in: #: ../thunar-plugin/audio-tags-page.c:1088 msgid "<b>Length:</b>" Version: 0.3.0-2
According to [1] length is valid for time measurements. I see no problem changing that string, but I wouldn't want annoy translators unless we have a good reason. 1 - https://dictionary.cambridge.org/us/dictionary/english/length
ok maybe just in my language directly translating length sounds like a dimension like width.