confused about Rising Storm

If you've purchased Rising Storm you get the entirety of the original Red Orchestra 2. RO2, Heroes of Stalingrad BETA is just what it says, beta testing for upcoming patches. RS BETA is a leftover from when RS wasn't released yet and beta was given out to people who owned RO2. RS?RO2 Multiplayer is the one you want to install.

No they just give you the beta too. For example I have the paid version of TF2 so I also get the beta version of it.

The Rising Storm is a rock and roll group which was active at Phillips Academy in Andover, Massachusetts between 1965 and 1967.
The band is still active and has reunited to perform on multiple occasions: in 1981, when Cohen was replaced by rock musician and record producer Andy Paley; in 1982, 1992, and 2002, when they played at their 15th, 25th, and 35th class reunions at Phillips Academy; in 1999, when they opened for the Boston reunion of The Remains; and in 2007, when they opened for The Yardbirds at the Primitive Festival in Rotterdam, with progressive musician and composer Erik Lindgren on bass.

But im still not sure what your question is about

This:
http://steamcommunity.com/app/35450/discussions/0/846960628293353612/#c846960628293465488