installed Haali Media Splitter 64-bit; how do I run gdsmux 64 ?

[spectrvm]

I already installed Haali Media Splitter 1.11.96.14 and the folder has the 32 and 64 bit versions of each utility; however I got only two shortcuts:

C:\Windows\System32\rundll32.exe splitter.ax,Configure
C:\Program Files\Haali Media Splitter\gdsmux.exe

which starts the 32 bit version of these tools (as clearly shown in Windows Task Manager as *32)

I have the files:

splitter.x64.ax
gdsmux.x64.exe

but I can't manage to start them

[Selur]

wild guess: create a new shortCut to the gdsmux.x64.exe and doubleclick the new shortcut,..

[spectrvm]

wild guess: create a new shortCut to the gdsmux.x64.exe and doubleclick the new shortcut,..

you can't directly create a shortcut to access the settings for such a file: you have to create a shortcut like

C:\Windows\System32\rundll32.exe splitter.ax,Configure

or whatever is the equivalent for the 64-bit version targeting splitter.x64.ax; which of course I tried with the above line but got an error