AdiIRC

Yeah, the highlight sounds are played through the same system as /splay which incorporates it's own volume control with /vol. I'll make sure the highlight sounds volume are not altered.

For now you can revert to the old sound system by typing in the Editbox /setoption Misc UseOldSoundApi True, then restarting AdiIRC.

does that mean the highlight sound volume can be controlled using /vol?

Per Amundsen wrote in #note-1:

I'll make sure the highlight sounds volume are not altered.

what do you mean?

In theory yes, but there is no flags in /vol for it.

What I meant was, for next beta, the highlight sounds player will not try to set a custom volume and let windows control it instead.