QUOTE(u2watcher @ Aug 15 2008, 18:34)

But they use this I hope I got the name right.
aac plus v2 40kbs
AACPlus (or AAC+) is a trademark of an HE-AAC encoder. Since you say aac plus v2, then, it is the HE-AACv2 (with parametric stereo, PS). 40kbits seems a correct bitrate for such a codec. (although 48kbps is more adecuate).
You have it also in Winamp, and also for free (it is not the High Bitrate one).
If you require it in aac, instead of inside an MP4 container, just use the one that says aacplus, not the one that says MP4/aacplus. Set the channel mode to "Parametric Stereo" to enable it.
The nero encoder always makes AAC inside an MP4 container, but if you still want to do it, the settings are:
-hev2 -br 48000 -ignorelength -if - -of %d