when I try to open ra2.mix, instead of a name I get an 8 digit ID. On the faq, it says open XCC AV and choose "Set Directory..." I can't find this anywhere in the options it has given me.

I also tried to change the data directory through the mixer itself, but it resets every time that I try.

If it helps, it says that the mix files from ra2 are:

game:tiberian sun

Please help