Embodiments are provided for causing a playback device to pre-cache audio content in a playback queue. An example implementation involves a playback device detecting by a sensor on the playback device, movement in relation to the playback device. In response to detecting the movement, the playback device identifies a particular media item in a playback queue associated with the playback device. Prior to receiving a user command to play the media item, the playback device stores at least a portion of the particular media item in memory on the playback device.