hey i haven't got pro as yet because I haven't got the funds right now, but using limewire is easy and really useful and if pro makes things quicker then all the better! so i will be getting it when I can.
I haven't got my head around playing avi files either yet. I have tried the k-lite codec pack, VLC player (which I got audio but no picture) and h-play (which stopped me from previewing anything at all!) but I'm hoping that I will find something/someone in these forums that will give me the answers.
good luck and if you find an avi player please let me know!!