rooExtend v3.4.0 is out
Release 3.4.0 introduced a new Roon Extension rooMax 
rooMax supports the Quick Keys controller from Xencelabs and adapts it for perfect usage with Roon.
Like always I have set up an extra support thread for rooMax. Please feel free to contact me and also the beta testers here and ask your questions.
It will install automatically at all Raspberry Pi instances running v3.x.x or above.
The release for the rooExtend-Box is not yet published!
Best DrCWO