Virtualdub help

Ive used this before so i know how to use it, etc..but not for a while, anyway after re-installin it to use again the audio compression/conversion isnt showing up for me, anyone know what I gotta do?, i think i had this problem last time but i cant remember what i did!

i already had this problem but after i reinstalled virtuald dub it worked.
Also use these links for soft.
http://www.eamods.com/phpBB3/viewtopic.php?f=175&t=2445
http://www.jcafe24.net/index.php?topic=1635.0