Thanks zenzen
I probably missed a few steps when I followed your instructions, but this was what happened.
earache@Eric-ASUS:~$ sudo dpkg -i icaclient_23.11.0.82_amd64.deb [sc1]
[sudo] password for earache:
dpkg: error: cannot access archive 'icaclient_23.11.0.82_amd64.deb': No such file or directory