As you may know, Sopcast is needed if you want to watch TV channels online. Actually, it is the best player (as I know of) that allows you to watch online television channels.
The latest version available is Sopcast 0.8.5, which has been released a while ago.
Due to the fact that sopcast is available via PPA for Ubuntu 18.04 Bionic Beaver, Linux Mint, Elementary OS and other Ubuntu derivative systems, installing the software is easy. All you need to do is add the PPA to your system, update the local repository index and install the sopcast package.
$ sudo add-apt-repository ppa:linuxthebest.net/sopcast
$ sudo apt-get update
$ sudo apt-get install sopcast-player
Optional, to remove sopcast, do:
$ sudo apt-get remove sopcast