The .BIN file is an installer. You're not supposed to open it with another program, but run it. When you used the chmod command you didn't open it; you made it executable. Now, all you have to do is run it from the terminal. Now, if you try to do something like:
you@ubuntu:~$ PlaneShift_CBV0.3.020-x64.bin
it will say it can't find the program. That's because your environment is not configured to look for programs in the folder you have the installer. Yes, it's right there, but that's a security measure. Imagine what would happen if we were able to execute every file we have on our home folders, imagine one of those files has a trojan or something evil. That's why the system makes sure we will know what we're doing. Okay, so what to do? We tell bash where the executable we want to run is:
you@ubuntu:~$ ./PlaneShift_CBV0.3.020-x64.bin
Notice the ' ./ '. That's means 'current folder', so what we're telling bash is: "execute file /whateverthecurrentfolderis/PlaneShift_CBV0.3.020-x64.bin"
Alternatively, you could just tell it the full path, like this (remember you don't type the $, that's just to show the command promt:
$ /home/you/downloads/PlaneShift_CBV0.3.020-x64.bin
or
$ /media/windows/downloads/PlaneShift_CBV0.3.020-x64.bin
etc, etc.
Try one of those and see if it works.