...
Start by adding the Advanced Music Bridge to the system network, MMS Configuration page, and then upgrade your MMS to Mirage OS 7.0+. Click here for the Advanced Music Bridge Quick Start Guide for additional details.
After the MMS has updated to Mirage OS 7.0+ and restarts, add Calm Radio credentials under the Content tab on the MMS configuration page, give your account a nickname, and click “Add”
...