I know of two plugin’s off hand that can use the mousewheel no problem inside Podium: RS-Met’s EasyQ and Sugar Bytes Artillery.
But I found something weird…
The mousewheel works in Vember Audio’s Shortcircuit as well — sorta.
The mouse wheel zooms in and out of the sample waveform, mouse hovered over SC or anything else, it doesn’t work. Hovered over the navigator, it zooms just fine.
.