Thanks, Andrew.

I haven't yet tried to remove the Band-in-a-Box HiQ instruments to see if I can associate the ARIA Player after that, but for information I can already use the sounds of JABB ... via Sforzando!

And there may be another problem with the ARIA player or its installation because, apparently, it works less well than Sforzando: when I use JABB from a MIDI keyboard via the ARIA player in standalone mode, I have a high latency, whereas when I use JABB from the same MIDI keyboard via the Sforzando standalone mode, I have very low latency.

Maybe I should read the 65-page ARIA player manual first ;-)

P.S. : If I understand you correctly, the instructions on the page https://www.pgmusic.com/tutorial_garritan.htm are partly outdated : with BiaB 2020, I can, and even I must, use the ARIA Player VST_x64.dll file and not any more the ARIA Player VST_x86.dll file ?

Lazy Bird