What is the length of Audio Ads?

Audio Ads are categorized into several different categories. They are:

(1) Short Ads - these have a maximum duration of 15 seconds

(2) Regular Ads - these have a maximum duration of 30 seconds

(3) Extra Ads - these have a maximum duration of 45 seconds

(4) Extended Ads - these have a maximum duration of 60 seconds

(5) Infomercials - these have a minimum duration of 61 seconds and a maximum duration of 5 minutes