.tar is just an extension meaning that it was a socalled 'tarball', a wrap of files. It doesn't define what you should do with them. e.g. I could tar up my whole home directory as one file to store it somewhere, in a file home.tar and then gzip it to take less space (tar doesn't compress) in a file home.tar.gz
But, as I said theyre just packaging methods, so the internals can vary alot. Most likely you downloaded the source code package, so the internals are files that are needed for a compile of the software. Source packages usually have a file called README that tells you what the package is and what to do with it (sometimes also install instructions) and sometimes also a file called INSTALL that gives details on how to exactly install the software. _READ_ those, and youll know all you need to know.. (:
Also, googling around will give you lots more info, but this is the gist of it. Using search here at LQ can also give you good results, I strongly recomend using it as this has probably been asked several hundred times already (;
edit: the tls package seems a bit scarse for a typical package, so im guessing its just some addon. The amsn site will probably tell you more on what to actually do with that specific package. There also might be rpm versions available for you distribution, searching for those might save you the hassle..