Is the audio driver fully Pi5 compatible?

[Argonautic]

I'm planning on upgrading to Pi5 from a 3B. I want to connect the Recalbox to my CRT via the RGB Dual. This works flawlessly with the Pi3 but needs additional hardware if I want the sound to come from the CRT speakers as mentioned on the website.
Is this still the case or has a Software solution been found?