Hi unamis76,
I am the developer of amodem, and would be happy to help you with the installation.
Could you please run the following commands on your console (to make sure the package is installed correctly on your OS):
$ python -c "import platform; print(platform.platform())"
$ python -c "import amodem; print(amodem)"
Any tutorial to use amodem? It's says it isn't recognized on terminal after I install it...