I have redownloaded the file....
in matroska files you are perfecly right ! But i still cant change audio stream . Im rightclicking the video and the popup window with the streams goes white and then closes ! The 1st stream works but i cant change it .
Later ... even if i install matroska etc ... i cant choose audio ! The window becomes white . So it has nothing to do with the filters registration etc ... !
Its some stupid bug im sure !!!!!!!
In ogm its not working in stanalone but its not important .
In order to help you as much as i can take a look of that foto :
The white window is the popup window and becomes like that when we have audio on matroska . (with/without matroska and other filters installed ). Even with one audiostream and all the filters intaled i have the same problem of the white window !