Arduino playing wav. (stereo) *help*

Hi
I have been working on my proyect but im stuck in a situation.

Here is the thing, i need to play an audio file (.wav) in 2 channels (stereo) ,why?

Because i am playing signals, (automotive signals, crankshaft and camshaft), so i need to play 1 signal

in 1 channel and the other one in the 2 channel, i was thinking of using 2 SD cards and play them

separately but i think thats not the best way to do it.

so does anyone knows how to make this possible?

What Arduino? A Uno is not fast enough. Use a Due, Zero or Teensy.