src rpms only contain source code, so unless you plan on making modifications to this program and re-compiling it, src rpms are of no use to you. They do have their place, but they are very rarely required.
It's like the old "elitist" saying goes:
"How much does it cost?"
"If you have to ask, you can't afford it"
The same can be said for src rpms. If you don't already know how to use them, then you don't need them.
Last edited by suicidaleggroll; 04-03-2013 at 09:23 PM.