I don't know that Spanish news podcasts are all that common or popular on the internet. I mean, news about Spain, that is.
Are you seeking news about Spain in English or Spanish? I'd imagine the latter would be easier to find but since there's a bit of lag in technology popularity you may find fewer in/from Spain.
Have you checked
http://www.ElPais.es and
http://www.ABC.es and the rest?
Saludos, MadridMan
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