Gnome apresenta risco de segurança ao tentar abrir arquivos mp3

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Esse foi o erro que eu passei dias vendo. Até que resolvi buscar uma solução. Só que o meu problema era quando eu tentava abrir arquivos mp3 pelo nautilus.

1. Put this in the file "~/.local/share/mime/packages/custom.xml"

MP3 bild

2. Ran 'update-mime-database ~/.local/share/mime'

dica retirada daqui.