Nah mate even so. Even with mp3 or videos. Should realise that this is basically all about their discretion. If they want to nail you, they'll nail you or at the very least make your life that much harder.
Why give them that opportunity. Cover your ass anyway possible, I say i.e. encrypt etc etc.
Yes, I acknowledge and understand their job in protecting australia's borders etc etc but they're also a major revenue raising arm of the gov't...
Anyways my personal opinion of them (which I am much very entitled too) is