You mean user audio files? That's not possible at the moment. I actually considered adding it in an update and it would probably work one way or another. At least on Windows, from what I've read. But it could come with a few downsides. Saving the audio files might be unreliable, sharing patterns would be more complicated and the interface would probably be harder to read.
Don't have much free time at the moment, but it's still something I wanna look into!