Budding Entrepeneur

Hi,

I'm planning on setting up an LLC in the next sixth months and had an important question.
Let's say the name of my business will be 'Wisdom Media' and I registered my business under that name.
Yet, what if I have two brances of this business, one being in film and the other in music. One wold be called Wisdom Films and the other Wisdom Music. Do I have two create separate business licenses for these branches? Could my clients write out checks to Wisdom Films or would it have to be always written to Wisdom Media regardless of the branch. Could they write out a personal check to me and could I cash it in the Wisdom Media bank account?

Any help would be appreciated as well as some other resources online or books to help understand these intricacies.

Thanks

Adam