Ya, enough of the same posts on DR1. One is enough, you don't need to post multiple times your looking for a job. If you have a very specific question, fine.
If your Spanish is weak, forget media sales for the likes of the Listen etc. They sell to the local market and really couldn't careless about your gringo credentials etc.
I have a Chilean friend that has owned and managed plenty of radio stations in Canada. He can sell and I mean sell! He still has problems here because he's not Dominican. It takes time and networking is the key in this business in the DR.
Since the banks by law are not allowed to own radio/media anymore, the bottom has dropped out of the radio ad market. If you have the cash, plenty of stations available to buy.