Comment 11 for bug 1161283

It would seem pretty straightforward - remove those 2 files from app-install-data, they don't belong there.
As far as sonic-visualiser, in lei of proper maintenance -
The actual application .desktop needs help & probably the 2 mime type .desktops shouldn't be installed as they seem to do nothing useful.
Ex. of that in link
https://launchpad.net/~mc3man/+archive/nautilus-modded/+files/sonic-visualiser_2.1-1_2.1-1ubuntu1.diff.gz