Hey Pesk92-
You first want to make sure you are including Runtime/Engine/Classes/Sound/SoundCue.h in the class that is to use SoundCue. Additionally, if you are having issues related to the SoundCue class being minimal_api, you can open the file and mark specifically the functions you want to use with Engine_API. If you still have problems after these changes, please indicate how you are using SoundeCue with sample code or screenshots for additional information.