25. The electronic device of claim 21 , wherein the most recent text unit is the text unit that was most recently compiled to be played as audio.
21. An electronic device that is configured to synchronize the playing and displaying of digital content, the electronic device comprising: a processor; memory in electronic communication with the processor; instructions stored in the memory, the instructions being executable to: render a first portion of digital content for display on the electronic device; play text units in a segment of digital content as audio using a text-to-speech engine; and render a second portion of digital content for display if a position of a most recent text unit is greater than a last position in the rendered first portion of digital content.