How to install ImageMagick and SOX

I will need to install software that requires the following:
ImageMagick (for photos upload),
SOX (for audio upload),
(Apache and CGI modules)

How to install all of the above or is it already installed with DA?

You will have to install those on your own.
I think there might be a HowTo for ImageMagick in these forums, but I think you will need to use the installation instructions provided with SOX to install/configure it, since I haven't heard of anyone installing it on these forums.