Open the Explorer in Roblox Studio. Navigate to 'Workspace' and select the 'Sound' folder. In the Properties menu, go to the 'Asset' section, and paste your song ID into the 'Soundid' box.

As aforementioned, you will need the matching sound ID to add an audio effect using the Roblox Studio Explorer window. In the case of the popular Osu hit ( which is taken from the titular rhythm ...