The iPhone's version of Safari does not have any live audio streaming 
support, so the AJAX Remote can't offer that functionality either. 
Sorry.

Apart from that, Remote Buddy should not be used as a baby monitor, 
btw (=> see Remote Buddy license, last paragraph of point 2). No other 
software should be used for it, either. The complexity of any iPhone 
based solution (Server software => Mac OS X => Mac => wireless router 
=> iPhone and its energy saving mechanisms (including shutdown of the 
WiFi connection after 30 minutes depending on your and the 
application's settings) => browser software => ..) is going to be 
relatively high and will offer too many possibilities / points of 
failure for such a usage scenario.

Best regards, 
Felix Schwarz