XnView Software

My working syntax to load all files in filelist.txt with my XNconvert (1.95) is :

xnconvert.exe @filelist "filelist.txt"

XNconvert load all images, but does'nt start conversion.
To start conversion needed to press "convert" button. Currently I'm using little autoit script to detect window and ...

There is a way to automatic XNconvert when used with "XNconvert @filelist" ?

Another request: automatic close is OK, but please remove the sound (or give an option to remove)

Thanks