I use Debian sid (amd64), rolling updates as often as weekly. I downloaded recently the desktop version 0.99.902 of RStudio from their offical site and issued (as root, of cours
Download the libraries
http://ftp.br.debian.org/debian/pool/main/g/gstreamer0.10/libgstreamer0.10-0_0.10.36-1.5_amd64.deb http://ftp.br.debian.org/debian/pool/main/g/gst-plugins-base0.10/libgstreamer-plugins-base0.10-0_0.10.36-2_amd64.deb
Install them with gdebi or dpkg -i and that is it