It looks like there might be no A1GP FTA TV coverage in Australia. Channel 9 is listed in the TV listing on the A1GP website but I just rang Channel 9 and asked them when it was going to be on and they said "we don't have the rights". Its not listed on Channel 10's schedule (
http://www.rpmlive.tv/broadcast.aspx) and channel 9 have said they will not be showing it.
I found this website were you can watch the full races. Go to
http://www.rtl.nl/sport/rtl_sport/video/a1gp.xml.