As explained in the tutorial there, the sixaxis emulator runs well with a Ubuntu Live CD. But the bad point of that method is that the installed packages & softwares are not persistent (everything runs from volatile memory, nothing is saved on disk).
I discovered it is really easy to setup a Ubuntu Live USB Persistent Flash Drive. This stuff makes the sixaxis emulator extremely transportable: just take your bluetooth dongle and your usb flash drive, plug them on any PC, boot from USB, and start the sixaxis emulator!
A quick & easy tutorial to setup a Ubuntu Live USB Persistent Flash Drive can be found there.