if you use the proscan free client

https://www.proscan.org/

there seem to be 112 feeds - but we cant download the list apparently

lower left side -

Free Client

Download ProScan Free Client 22.0
Runs on Win. 7 SP1 and above

Change Log

This is a stripped down version of ProScan for connecting to ProScan
RSOIP (Remote Server Over IP) Servers in Monitor Client mode only.
The Audio Recordings and Logging features are enabled. The Free
Client does not remote control the scanner or upload / download data
to the scanner. That requires the full version of ProScan running
Remote Scanner Over IP Client.

it is easy to download and set up - but you have to select REMOTE
SCANNER OVER IP in order to hear anything