I agree with Pupisek... i would not mix the languages coz it might be confusing to the baby...unless the languages use different characters (Like english and Arabic for example), then they would look different and it might be not as confusing... my main aim with separating them is that the child doesn't learn to mix the languages while he/she speaks in the future
Same with the labels around the house... I'd pick just one language and label everything with that....
My favorite method to date is having language days , so one day everything is in arabic (talking, LR, books, everything), the next day is in english....etc... especially if your spouse doesn't speak another language and you are doing all the work