Simple Audio Player : Low frequency limit

Hi everybody,

I am very new in the Arduino community. I am about to start a project and my first step is to reproduce the player that I found on that page :

In fact I would like to extract the analog signal of a *.wav file. My question is : using the method mentionned above, is there a low frequency limit ? (I want to work with frequencies as low as 1-2 Hz and I fear a high pass filter in the DAC process)

Any help would be precious, Thank You, :)