I have improved the
quest messages plugin from
Jeferson Tomazella for playing sound when messages pop-up. You can add sounds for Add Quest, Quest Update, Failed Quest and Quest Completed. Just write sound name without extension (from audio/se folder), and that's all. If sound name is blank - no sound will play.
Remember - you need GALV_TimedMessagePopups for script working.
And of course
GameusQuestSystem itself.
Make sure you have
last version
No credits or anything else, I was just needed this functionality, so I made it and shared it now. If something not working, well... write about it.