links by jubior members aren't visible but can be seen by clicking on quote.
http://www.youtube.com/watch?v=s1eNjUgaB-g
and
http://kapsi.fi/~jpa/stuff/other/youscope-wave.flac
i think i understand what you want, which is very simple indeed.
- you have opened the avs editor
- preset>new
- in [main] check "clear every frame"
- +>render>superscope
- select the scope delete everything in it.
- put this in the point box:
code:
x=getosc(i,0,2);
y=-getosc(i,0,1);
- and in the init box:
code:
n = 1000
- there you go, now play the file...
it's actually kind of funny, i've never seen stuff like that on avs

only problem is, it doesn't look quite as good as the thing on youtube, because avs' oscillograph resolution isn't so good.
gc