To add iHeartRadio to your Sonos, follow the steps below:

Sonos Controller for Mac or PC

1. Select "Add Music Services" from the Music pane.
2. Select iHeartRadio, and then click Next.
3. Select "I already have an account", and click Next.
4. Type in your username and password when prompted, and follow the on-screen instructions to complete adding your account.

Sonos Controller for iOS and Android

1. Tap the Settings tab.
2. Navigate to “Services & Voice”.
3. Under the Music & Content section, click "Add a Service".
4. Select iHeartRadio from the dropdown, and then click "Add to Sonos".
5. Select "I already have an account."
6. From here you can follow on-screen instructions to finish adding your iHeartRadio account.