How to install emulators on Yellow Dog Linux 6.1

[BigBlock]

I was looking for help on putting emulators on my PS3. I just recently put Yellow Dog 6.1 Linux on and it seems to work perfectly but Ive also never used Linux. I'm trying to put emualtors on and have googled and you tubed many. I was looking at Snes9x, Mame, and Gahcade. I think ive downloaded the files and saved them to the desktop but I don't know how to install or run them. The you tube video's were old and no longer work. Any help would be awsome I have been struggling for a while. Thx