scummvm 0.11.1 is now in diablo extras-devel. It is missing flac and ogg support totally.

I had libvorbisidec-dev, which should contain tremor, in build depencies instead of normal libvorbis. libvorbisidec-dev is having some problems or for some other reason scummvm doesn't recognise it.

Flac works for me locally, but something went wrong with autobuilder.

I will at least fix flac and normal ogg vorbis support, and maybe look into tremor support.