1. A system comprising: an electronic data store configured to store: an audiobook version of a content item; and an electronic book version of the content item; a touchscreen comprising an electronic display enabling touch input to the electronic display; and a computing device in communication with the electronic data store and touch screen, the computing device configured to: output a first portion of audio content associated with the audiobook; generate, for display on the touchscreen, a user interface including a first portion of text content associated with the electronic book, wherein the user interface includes an output indicator indicating text, within the text content, that corresponds to the first portion of the audio content; receive a first touch input data associated with a first set of coordinates on the touchscreen, wherein a first coordinate of the first set of coordinates is associated with a first time at which input was received at the first coordinate; determine, based at least in part on the first coordinate of the first set of coordinates and the first time associated with the first coordinate of the first set of coordinates, that the first touch input data corresponds to a predefined gesture associated with causing display of a rotational navigation control element; generate, for display on the touchscreen, the rotational navigation control element; receive a second touch input data from the touchscreen at a second set of coordinates on the touchscreen, wherein a second coordinate of the second set of coordinates is associated with a second time at which input was received at the second coordinate; determine, based at least in part on the second coordinate of the second set of coordinates and the second time associated with the second coordinate of the second set of coordinates, that the second touch input data corresponds to a rotational input to the portion of the touchscreen displaying the rotational navigation control display element, the rotational input representing a request to move the output indicator to locate a specific word within the text content of the electronic book and further representing a request to navigate, in the audio content, to a location corresponding to the specific word within the text content; display the output indicator at the specific word within the text content of the electronic book; determine a time position in the audio content associated with the audiobook that corresponds to the specific word within the text content of the electronic book; and output a second portion of the audio content from the time position.
1. A system comprising: an electronic data store configured to store: an audiobook version of a content item; and an electronic book version of the content item; a touchscreen comprising an electronic display enabling touch input to the electronic display; and a computing device in communication with the electronic data store and touch screen, the computing device configured to: output a first portion of audio content associated with the audiobook; generate, for display on the touchscreen, a user interface including a first portion of text content associated with the electronic book, wherein the user interface includes an output indicator indicating text, within the text content, that corresponds to the first portion of the audio content; receive a first touch input data associated with a first set of coordinates on the touchscreen, wherein a first coordinate of the first set of coordinates is associated with a first time at which input was received at the first coordinate; determine, based at least in part on the first coordinate of the first set of coordinates and the first time associated with the first coordinate of the first set of coordinates, that the first touch input data corresponds to a predefined gesture associated with causing display of a rotational navigation control element; generate, for display on the touchscreen, the rotational navigation control element; receive a second touch input data from the touchscreen at a second set of coordinates on the touchscreen, wherein a second coordinate of the second set of coordinates is associated with a second time at which input was received at the second coordinate; determine, based at least in part on the second coordinate of the second set of coordinates and the second time associated with the second coordinate of the second set of coordinates, that the second touch input data corresponds to a rotational input to the portion of the touchscreen displaying the rotational navigation control display element, the rotational input representing a request to move the output indicator to locate a specific word within the text content of the electronic book and further representing a request to navigate, in the audio content, to a location corresponding to the specific word within the text content; display the output indicator at the specific word within the text content of the electronic book; determine a time position in the audio content associated with the audiobook that corresponds to the specific word within the text content of the electronic book; and output a second portion of the audio content from the time position. 4. The system of claim 1 , wherein the computing device is configured to determine that the first touch input data corresponds to the predefined gesture associated with causing display of the rotational navigation control element based at least in part on identifying from the first touch input data a touch event beginning at a starting coordinate associated with an edge of the touchscreen and ending at an ending coordinate nearer to a center of the touch screen than the beginning coordinate.