Don’t listen to the Windows fools, you are on the right track. Volumio and Raspbian on the same RPi SD Card? Surely, you already have it. Volumio is based on Raspbian and you only have to
apt update
apt install abcde
and you are done.
I wanted to turn Volumio into a CD Ripper myself, but still had not the time for this. It would be nice to have a ripper which stores the flac files on the same storage device where mpd will immediately find them. The only problem would be the hardware. You will need an external DVD/CD drive with its own power supply or - even better! - an internal DVD drive and a SATA-to-USB-Adapter which can power the device, something like this
but I have not tested this on a Raspberry PI.
I wanted to use my old Plextor drive from an old pc tower which is better than everything you can buy today.
If you try this, I would really like to know how it worked.