speedtest.wav: 10 s (31.0 to 41.0 s) of "The Gift of the Magi" by O. Henry, read by Betsie Bush for LibriVox.
Public domain: https://archive.org/details/giftofmagi (licence: creativecommons.org/licenses/publicdomain).
Used only to time a local model on the user's computer; never shown or sent anywhere.
