Tangy is absolutely completely 100% wrong on this subject. Unless you listen to files with conflicting commands (like "You like X" in one file and "You hate X" in another) then nothing will happen. Even if suggestion conflict, it will not "cross up" your subconscious, you will just end up picking whichever one you like better arbitrarily and that one will work. Like flipping a coin.
It is true though that focusing on just one file will help that file work, but only because it means you're listening to it more frequently. Alternative two files you like or have a different file a day would work too.
tanyaslave wrote:I'm a dark type.
I'm immune to psychic type attacks.
:P
Also this. This is true too.