27. The system of claim 26 , wherein customizing speech delivery for the second speech segment comprises at least one of: (1) shortening breaks between words within the second speech segment before delivering the second speech segment to the user device, (2) truncating one or more phrases within the second speech segment before delivering the second speech segment to the user device, and (3) omitting delivery of the second speech segment to the user device.
26. The system of claim 19 , wherein the instructions further cause the one or more processors to: detect user input fast forwarding or skipping playback of at least a first speech segment previously delivered to the user device; and in response to the detecting, customize speech delivery for a second speech segment to be delivered from the client device to the user device.