I wrote to Aurender about the Alphabetical sorting, and searching of favorites and this is their reply:
“The limitation related to Qobuz sorting is actually a limitation by Qobuz, not Aurender. They share something called an "API" that allows us to incorporate features of their software into ours, and they did not share any sorting or filtering options with other developers. I agree 100% that this is a must-have feature but we have to wait for them to allow us to incorporate it.”
Nice reply.