Sirius music in my shop

[Boise69]

Well the shop 'boom box' finally died today so instead of getting a new one and listening to more FM radio which I HATE, i'm thinking Sirius radio.

The questions:

I want to be able to hook it up to 4 speakers that are mounted throughout the shop on the ceiling- can this be done?

I want to be able to remove the Sirius receiver and take it with me in my car on a trip if i want. - can this be done?

Its a steel building and the FM reception is poor - Will the reception be any better and can the antenna be mounted on the outside of the building?

I have Sirius at home and like it but its definately not because of Howard, i hate that crap.

Based on what i asked, what is the system i need to do it all??? I want it to be strong enough to be heard throughout 12,000 sq ft over the 4 already installed speakers


Shoot, i posted this in the wrong place, if i knew how, i'd move it myself, please move to General. thanks

TIA