Unfortunately, one of the worst parts in Linux-based systems has always been how to select which is the default audio device to which any sound output or input

Unfortunately, one of the worst parts in Linux-based systems has always been how to select which is the default audio device to which any sound output or input must be routed and which is the correspondence between the real audio devices existing in a computer and multiple ambiguous device names that might be used for them by various audio utilities. Sometimes the only good way was to test all possible names with speaker-test or the like.