Try ftp to lola.lllf.uam.es
Use "anonymous" login and your e-mail address as password.
Look in /pub/corpus/.
They have an oral corpus of Spanish plus some written corpora
of South American Spanish (Argentinian and Chilean). The three
corpora consist of 2 million words each (7 MB).
Alice Carlberger
Dept. of Speech Communication & Music Acoustics
KTH
Stockholm
Sweden
E-mail: alice@speech.kth.se