Stereo Versus Mono Speakers/Headphones: Why You Need Stereo

[geetapriya]

Hi
I have a question in regard to speakers :
I have a 2010 MAcbook Pro and just downloaded free subliminal from you/Indigo . Can I listen on my Mac - not sure if this model has stereo speakers ?

second : can I download on my iPod from my computer and then listen through my stereo speakers ?

third : can I actually do the same with my iPhone - download the track on my iPhone and listen through stereo speakers ?

I know there are very basic technical questions but I want to get it right
thank you