iTunes in Spain?

iTunes id in two countries? I have a UK apple account and now live in Spain. I need to download a free spanish app for my iPhone and the iTunes store says it is only available in the spanish store (understood) and transfers me. It then tells me I cannot purchase as I don't have an account for the Spanish store. If I open a new iTunes account with my spanish address and bank details will this cause problems with future music and app purchases? Will I need to spend ages each time I open iTunes? Thanks in advance