I think that listening is the most relevant activity in order to improve our communication skills, especially for people like me, who have no time enough to access to a formal studying.
Today I want to share an internet address to seek radio streaming transmission all over the world.
You just have to write on the navigation bar of your internet navigator:

radio.garden

It works like Google Earth, showing you the planet and targeting the radios with green points. When you cover that point inside the circle, at the right-down of the screen the system shows the available radio stations, and at the left-down of the screen it shows the city where the radio is located.

You could listen radios in spanish of a lot of different accents: the original "castellano" of Spain, mexican, bolivian, peruvian, argentinian, and so on. In argentinian territory you can listen accents from Buenos Aires, Cordoba, Santiago del Estero and Corrientes (provinces). All those regions of the same country have accents markedly differents.

I hope it will be useful for all of you