XnView Software

I'd like to select wich kind of file types I would like to see on the file list, because I have a problem now.
The problem is the following:
I shoot with my camera in RAW+JPG mode. This means there is a RAW file and a JPG file in the same folder with the same name, but different extensions (MRW, JPG ...

Sort order changes back to Sort by Name when I change a folder. The point is still at the selected type of order (i tried to list file by type), but the list is sorted by name.