I frequently listen to audiobooks while playing a game that doesn't require the sound. I usually do this with Guild Wars 2. I've been playing it so long, the repetitive sound effects, and character comments have become dreary, so I mute the game sound and play an audiobook instead. Works great while I grind through daily content.
That's about the only time I multitask though.
That's about the only time I multitask though.