After searching for a solution for the longest time I decided to come here. I couldn't find a solution to this, but for some reason the sounds in the Portal mod, like radios or music disks, do not play. This goes for singing oracle turrets and everything else that makes sound. I searched the config files, but the mod sound was set to yes (1). The game will show signs that these sounds should be playing (eg: Dancing turret animation and colourful letters on bottom of screen that shows song title) but they do not play. Mod version is 1.4.7.4. Thanks for any help, or if there is already a discussion on this topic, i'm sorry about that and a link would be appreciated.