You typically don't need srpms, they contain the source code for all the software. RPM is an archive format that contains the compiled files of programs and some information for the Redhat's Package Manager (the program that Fedora uses to manage installed software) that define where to install the program-documentation files, what other files to modify or commands to execute thereafter (to ensure the successful installation) and other information needed for dependencies, versioning, etc. The rpms that you choose in the installation will be installed through the wizzard so you don't have to worry about it.
PS. Personally I hate redhat and rpm
The administrator has disabled public write access.