No; that will make the sound the same through both earphones which isn't what the parent poster had in mind. iOS does solve the problem natively though (I belie

No; that will make the sound the same through both earphones which isn't what the parent poster had in mind. iOS does solve the problem natively though (I believe): it has a left-right balance slider, so you can just push it all to one side, then sound will only come out of one earphone.