Connect your radio to the network using wifi or ethernet. The radio exposes a weird non standard root shell. The system is running a very stripped down android without any useful cli utils. I have not found any utility to do file transfer, so we need to bootstrap something over telnet.
TODO: Add link to util
The internet radio menu is generated from this url:
https://opml.radiotime.com/Browse.ashx?c=&partnerId=8KHEgkpn&serial=redacted
By navigating through the different menu entries in the opml you can find the streams shown on the device.