OpenRA

I just discovered OpenRA. I would like to complete the setup. When I put the Dune 2000 disc OpenRA install the Campaing Briefings but not the Game Music. How I can install Game Music?
When I go to Mange Content:
After select Detect Disc or Installation the disc will be detected:
After click on continue retur to first windows with no installation.

There is a bug in the current release where it thinks you don't have all the music even when you do. This will be fixed in the next release.

If the music player is showing tracks then there is nothing more that you need to do.

Thanks! The only game with issue was Dune 2000 for Red Alert and Tiberian Down I have not issues