[mrob]

Audio does not make it impossible to do an instant swap. Any good ABX tool lets you switch between test/reference samples with zero delay. Hear for yourself:

https://abx.digitalfeed.net/list.html

(you can press A, B, or X on the keyboard for instant switching)

[kiririn]

Ye that's what I meant when I said side-by-side. You can't use the same pattern matching that your eyes/brain do when an image instantly swaps, as audio is always temporally moving to be heard at all. Instantly swapping between two audio streams is no better than looking at two images side-by-side