OS2 volume cursor (virtualbox machine)

[mauro]

Hi, in my Virtualbox OS2 Warp 4.52 installation I do not have the volume cursor on the tray, not even in the system setup. How can I get it?
Also, I've just upgraded to Vbox 6.04 , and it seems that system sound now are "cutted" after one sec playing, they do not go to the end.
Is someone experiencing same?
Thank you