I'm looking to buy a live stream website software that i can upload and install. It needs to have a members database, so users can signup and host a live stream.

I open to offers, im on quite a low budget so i wont be able to pay much.

BTW, im not looking for something like what they have on video whisper.
I need a software with easy user friendly installation.
For someone with very little PHP experience.

I want something like ustream.com or justin.tv