This is incorrect (as usual). "Security by obscurity" is a fallacious myth perpetuated by Windows fanboys to try to make themselves feel better about using an OS that is basically Swiss cheese for malware writers, versus Mac OS which has never been affected by a virus in the wild since it was released a decade ago.
And Warez software? Are you actually serious with this garbage? So Windows gets a pass because its users are more likely to download pirated software? How do you trolls come up with this stuff? Strange that all the viruses that can be found in illegally shared music and movie files never seem to affect Mac users.
Misery loves company, but trying to equate OS X to Windows in terms of security is laughable.
Never mind that OS X, with its Unix-based file system and kernel, is, and has always been, harder to infect with a self-replicating program.
Windows, OTOH, allows users to write run-executable code outside their own protected memory space, whereas OS X does not.
The need for allocating resources toward running AV 24/7 is a waste, and grows tiresome.
The burden of diligently cleaning and editing the Windows Registry to remove trojans, malware, and spyware which the AV software didn't catch, is even less appealing.
Life is way too short for the need to be preoccupied by such inane distractions - thank you, no.
From
WikiAnswers:
Q: Can you get a virus through MP3 files?
A virus embedded within an mp3's code would be uncommon, since it would be difficult to do.
Spyware accompanied with the download, however, is quite a different story.
Or better yet, malware masquerading as an MP3 file - lots of them in the wild,

albeit, of no consequence to OS X users.