It depends a bit on what you are trying to do? What are these audio files? Do you need to trigger them individually or just pick one at random?
Things that might help, or not:
- I think there is a plugin somewhere that adds a bunch of audio files as scene audio at once. However, never tried it and don't know the name. You might have to search a bit.
- LogicBricks has a "RandomSoundFromAB" that can load audio files from an AssetBundle and play them at random. Also it has a button to load ALL the files from the AssetBundle. Added benefit is that loading from AssetBundle is WAY faster. All you need to do is to use Unity Editor to drag&drop some audio files into an AssetBundle and build the bundle. However, as you might have guessed from the name, the plugin is intended to play a random sound from the once you provided when triggered. If you want to play a specific sound, that works...but is not really helpful.