You can grab it direct from the store in just a few clicks.
If, somehow, that’s not enough for you, The Pokémon Company and Nintendo have also released the full soundtracks for Pokémon X & Y, Pokémon FireRed & LeafGreen, Pokémon HeartGold & SoulSilver, the original Pokémon Ruby and Sapphire, Pokémon Diamond & Pearl, Pokémon Black & White and Pokémon Black 2 & White 2.
Hopefully you’ll be able to find something you like, even if the prices do fluctuate wildly based on region. If you’re in the U.S. store, Omega Ruby & Alpha Sapphire will set you back US$9.99 – in Australia, thanks to the wonders of geography, it’ll cost you AU$16.99.
There’s been no word on whether these will be easily available through any retailer other than iTunes.