I want to play sounds with a volume scale greater than 1. PlayOneShot does take in a volume scale but it’s only from 0 to 1. The AudioSource.volume also runs from 0 to 1. Is there any way for me to play a sound with double its volume?
Not with just an audio source.
you have two options:
modify your audio file to be twice as “loud” and make a volume of 0.5 your new normal. Then you can always double the volume by playing it on scale 1.0.
As another way to handle things you can use Unitys audio mixer to amplify any sounds. More on this in the Audio Mixer Manual here.