For reasons unknown to me, I woke up at 4 a.m. today with a burning desire to know whether radio/audio drama is eligible for the Hugo awards in the Short Dramatic Presentation/Long Dramatic Presentation categories. Not so burning that I didn't manage to go back to sleep for another couple of hours.
A quick google reveals that audio drama is eligible
(in the short form category if under 90 minutes, and in the long form categeory if over 90 minutes). As are computer games.
Not that an audio drama or computer game stands much chance of winning against a feature film or episode of a well-regarded TV show. But it's nice to know that they are eligible in theory.