Gearbox recently released the original Homeworld soundtracks via Steam, and also provided DLC codes for Collector's Edition owners to download them for free. Having purchased the Collector's Edition, I've already received my DLC code and activated it in Steam. This appears to have prompted an update to the Homeworld Remastered game, but I can't see anything in Steam that appears to allow me to access the music.
I went to Library->Music, but it says "We've come up empty!". I tried checking in-game menus, but didn't see anything. Is there something I'm missing?