I'm trying to get a Citrix receiver installed on to Ubuntu 14.04 (64 bit) following Ubuntu's docs. The first line of instructions say to get these required packages:

sudo apt-get install libmotif4:i386 nspluginwrapper lib32z1 libc6-i386 libxp6:i386 libxpm4:i386 libasound2:i386

But if I paste in that line, I get this error:

Reading state information... Done
E: Unable to locate package libmotif4
E: Unable to locate package libxp6
E: Unable to locate package libxpm4
E: Unable to locate package libasound2

My repository settings are below. Is there anything I'm missing in there? Otherwise what do I need to do to install these?

$ cat /etc/apt/sources.list
deb cdrom:[Ubuntu 14.04 LTS _Trusty Tahr_ - Release amd64 (20140417)]/ precise main restricted
deb cdrom:[Ubuntu 14.04 LTS _Trusty Tahr_ - Release amd64 (20140417)]/ trusty main restricted
deb-src http://archive.ubuntu.com/ubuntu trusty main restricted #Added by software-properties
deb http://archive.ubuntu.com/ubuntu/ trusty main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ trusty main restricted universe multiverse #Added by software-properties
deb http://security.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse
deb-src http://security.ubuntu.com/ubuntu/ trusty-security main restricted universe multiverse #Added by software-properties
deb http://archive.ubuntu.com/ubuntu/ trusty-updates main restricted universe multiverse
deb-src http://archive.ubuntu.com/ubuntu/ trusty-updates main restricted universe multiverse #Added by software-properties
deb http://archive.ubuntu.com/ubuntu/ trusty-proposed main universe restricted multiverse
deb http://archive.ubuntu.com/ubuntu/ trusty-backports main universe restricted multiverse