@ daniel t
Everything Tyler is telling you is 100% correct! You can however purchase the 4x Princo discs in Australia. (I'm presume you can buy them also in Tassie, I'm in Aus but not Tas)They are cheaper than the Riteks but work just as well. I too have the same Pioneer 107D and the same 1.16 FW hack and have never had a problem and have been using them for a few months now.
Go on give it a go its not as hard as it sounds. Not that you will need to but it is fully reversable! You will definately be happy with the results as you wont need to pay for the 8x blanks! You will be able to burn 4x disc at 8x!
And 'nfo' is just the fancy way of saying 'info'.
Just open the 'nfo' files with Notepad.