License keys for all Wowza products, including Wowza Media Server and AddOns, are stored in the [install-dir]/conf/Server.license file
Default location: /usr/local/WowzaMediaServer/conf/Server.license - Linux/Unix
Trial, Daily, and Monthly Edition subscribers will have a single license key while Perpetual Edition users may have more than one key to enable purchased AddOns.
To add a license key, open the Server.license file in a text editor and enter each new license key on a new line. When the standalone server is restarted, the new license will be in effect. The licenses are additive, so when adding additional licenses, be sure to retain the original license information in the file and add each new license key on its own new line. The order in which the keys are listed isn't important. The first and last five digits of the license key are displayed in the console window.
The following is an example Server.license file for a Perpetual Edition user with a Wowza Media Server license key, two Wowza Transcoder AddOn license keys, and one Wowza nDVR AddOn license key: