Hi Annie,  Check out Mark Fontana's Pianocorder Forum at
http://www.voy.com/33099/ .  Scan the listings for the ones offering
tapes.  There are not that many listings, you can get through the
postings in short order.  I would guess the respondents are all located
in the USA.  However, you might also try MasterTouch Piano Rolls in
Sydney.  They were an outlet for Pianocorder tapes at one time.

I know there are other sources of Pianocorder materials in Australia
too, so maybe you should place a posting on the Pianocorder site for
contacts in Australia.

Tom Lear
San Francisco, CA