Tricky one. ABC have been fiddling with their streams a bit lately (& their whole website, but that's another story) & if I try to record the regular link to their stream with ReplayAV, it fails.

However, I know what the underlying address is, so I use that instead & it works. Not sure if you can manually add it in your app, but here it is anyway:
http://media3.abc.net.au/774melbourne
Cheers,
Justin