I need to download proprietay drivers for Radeon 5450 and enable sound output through hdmi, need some assistance

I just rebuilt an old acer x1700 and I installed a new Radeon 5450. I am no longer using the stock windows vista. I installed Ubuntu Quantal for my os and now I am having trouble with the sound...there is none. I recieved a cd for installing the drivers but it was not for linux, only windows. I am assuming it is using open source drivers from unbuntu...how do i install the proprietary drivers and enable sound? Once I get past this hurdle I should be great. Btw this is my first pc rebuild and I am also new to linux. It would be nice if i had friends I could ask to help...but i have no such thing. Thanks in advance.

OS: ubuntu quantal (12.10)
Video card: xfx one radeon 5450
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  1. Solved my own problem. Just follow the instructions below if you have similar issues.

    Using Ubuntu-supplied fglrx/Catalyst

    On Ubuntu Quantal, this will install fglrx/Catalyst 9.000, which is roughly equivalent to Catalyst 12-9. NOTE: You must have the restricted repository enabled in Applications -> Software Sources... for this to work. After you complete the install, skip to Generate a new /etc/X11/xorg.conf file.
    Command line

    sudo apt-get install linux-source fglrx fglrx-amdcccle

    GUI

    Jockey was removed in 12.10. You now need to go to Software Sources and go to the Additional Hardware tab. You will need to install linux-headers-generic beforehand, or the Panel won't show up after the restart.

    Installing Catalyst Manually (from AMD/ATI's site)

    I recommend copying and pasting the commands to ensure there are no typing mistakes and speed up the install process. Remember to use Ctrl + Shift + V or Shift + Insert to paste into the terminal (or go to the terminals menu, select edit and click paste).

    Before you start

    If you have previously attempted installing Catalyst, remove any leftover files by following the Removing the Driver section. Make sure universe and multiverse are enabled in your repository sources (System -> Administration -> Software Sources). or Applications->Ubuntu Software Center->Edit->Software sources->Other software: check canonical partners.

    Install the prerequisite packages:

    sudo apt-get install build-essential cdbs dh-make dkms execstack dh-modaliases linux-headers-generic fakeroot


    If you are using the x86_64 architecture (64 bit):

    sudo apt-get install lib32gcc1

    Create a directory for the build environment and move to that directory

    mkdir catalyst13.4 && cd catalyst13.4

    Download the latest Catalyst package.

    This package contains both the 32-bit and 64-bit driver.

    wget http://www2.ati.com/drivers/linux/amd-catalyst-13.4-linux-x86.x86_64.zip
    unzip amd-catalyst-13.4-linux-x86.x86_64.zip
    chmod +x amd-catalyst-13.4-linux-x86.x86_64.run


    Create and install .deb packages.

    sudo ./amd-catalyst-13.4-linux-x86.x86_64.run --buildpkg Ubuntu/quantal
    sudo dpkg -i fglrx*.deb



    Test your installation

    NOTE: if you don't reboot first, fglrxinfo gives an error message. Reboot the computer and type

    fglrxinfo

    into the terminal. If the vendor string contains ATI, you have installed the driver successfully. Using fglrxinfo on a system with Catalyst 12-3 and a RadeonHD 4550 returns:

    display: :0.0 screen: 0
    OpenGL vendor string: ATI Technologies Inc.
    OpenGL renderer string: ATI Radeon HD 4550 (This line may be different depending on what graphics card you are using.)
    OpenGL version string: 3.3.11566 Compatibility Profile Context (This line may be different depending on what graphics card and
    Catalyst version you are using.)

    Now, try:

    fgl_glxgears

    If you experience issues or a hang, you may need to disable fast TLS.

    sudo amdconfig --tls=0
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