No Sound in Chromebook Linux

I'm sure this is a common issue, but I'm very bad with technology and need a solution. I downloaded Musescore onto my Chromebook using its new built-in Linux Terminal (using command "sudo apt-get install") and it works very well for editing. However, it has no audio, and it's not a hardware problem (everything else plays audio on the Chromebook). How can I solve this problem? Everything is updated on my Chromebook.