@Peter Delve > I'm not very familiar with Virtual DJ and didn't know there is a difference with the effects between the Mac and PC versions.
However, I know there is a difference between the standard edition that comes with the DDJ-ERGO and the Pro version that's available for purchase. This could be the reason you cannot locate the different effects, because they might be different versions of the software. Also, Virtual DJ has many plug-ins available and the Pro version can use any VST plug-ins but with "PC" only right now. They will most likely be implementing it for Mac, but will be in a future update. Mac doesn't have as many VST's as PC does though just to clarify that now.
As for using it as a normal sound card or to control another software, yes you can map it to another app but you will probably need to do it all yourself, so I hope you're good with mapping things.
Hopefully someone else can shed a bit more light on everything as I just noticed you haven't had a response yet, but I don't use or follow Virtual DJ much.
That will be a nice Xmas gift by the way. ;)
Thanks,
Foster