Download of RadioZ 1.0.0 for Mac was available from the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software is categorized as Audio & Video Tools. This free Mac app is an intellectual property of DevLander. We recommend checking the downloaded files with any free antivirus.
From the developer:
RadioZ is an application that helps you learn English by listening to American Radio stations online with a single click. It's very easy to start listening to the radio - just click on your task bar. By default, you will listen to English radio from the top station, but you can also listen to a radio in a custom link.
You may want to check out more Mac applications, such as Short Wave, which might be similar to RadioZ.