tomorrow I will boot Daphile on the same hardware and look in ....
/usr/share/squeezeboxserver/Bin/x86_64-linux
I suspect that I will find lame and ffmpeg as well as sox etc.
If so I will copy those packages on the Snakeoil install across to /usr/share/squeezeboxserver/Bin/x86_64-linux and see if that works....;_)
If it wasn't for the Creative dac doing such a bad job of resampling everything to 48kHz I wouldn't bother.
However if resampling in software to 96kHz for mp3 and streams works then there should be a sonic benefit.