Nope, no root/jailbreak required.I'm interested in installing the unofficial RP function on my Samsung Galaxy S3, I hear my phone doesn't have to be jailbroken to do this? Can someone give an easy to follow tutorial for me, the forum listed in the OP has a tutorial and the downloads but I still find it a bit confusing.
1) Download the .apk file from here (RemotePlayPortV0.9.1.apk)
2) Open it like you'd open any downloaded file to install it. If it doesn't let you, you need to enable installing apps from unknown sources first.
3) Play