The time US adults spent with digital audio recorded an 8.3% growth for a total of 1 hour, 29 minutes per day. ... More than 70% of US adults listened to digital audio content at least once a month in 2020 and 91.7% of this occurred via mobile. Rocket30 will record the best audio content to get to the best results. We will put your audio content in the ears of thousands of potential clients every day.