Malformed URL caused crash

[marcwickens]

This could be classed as user error, however the error I get back didn't point me towards the problem, which kind of sent me round in circles for a bit.

I sent in an invalid URL (http:/www.mystream.com - notice the missing '/' after 'http:' ).
This resulted in a crash and the error '“message sent to deallocated instance' coming from line 837 in AudioStreamer.m (CFReadStreamClose(stream);)

Again you could argue it's not the job of this class to verify such things, however if I think an error should be raised instead of crash. Thought I'd raise it here anyway. Will have a dig through to see if I can understand what is happening.