Quote Originally Posted by Fretworn View Post
Copyright doesn't have to be registered to be legally binding here in Australia. Though you do need to be able to prove that you wrote it first. Years ago a professional muso here told me that he would mail himself a paper copy and a recorded copy of the song which he would then leave unopened in a filing cabinet so that the postmark could be used as dating evidence in any copyright claim. Joining APRA is a must if you have song performed in public so that you can get any mechanical royalties owed to you.

Personally I haven't written anything worth stealing.
I have done the same except don't bother with the actual post but took them to the post office and had them stamp them over the envelope opening. Works the same and no risk of it being lost in the post.