...or do I have to use some other function?

No... but with the tiny, automatic cross fades, I don't usually find it to be a problem. D

The default shortcut is ALT+Z to split at previous zero crossing, or Z to move cursor to next zero crossing, then S to split.

Hey, is the zero crossing set at a low resolution? When I zoom in it doesn't seem to even be on the zc. It should respect the resolution, kind of like drawing automation does.

"Item: Split items at previous zero crossing" does always split at a zc, regardless the zoom. It might just not be the crossing you wanted when you were not zoomed in enough to aim properly. Btw, I'd wish this action would also split MIDI items (of course without the zero crossing part, could be at cursor) so I wouldn't need two seperate split keys for MIDI and audio, as I almost always want the zero crossing for audio.

I am not following...there is no aim. When you hit z it is supposed to go to the next zero crossing. This has nothing to do with zoom. It should be zero regardless. Especially when zoomed in. If not, it's not working correctly. I found the problem...it is going to the next zero crossing, but not necessarily the zero in both channels (left and right).