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Charles wrote:

Do you have any links where I can hear those languages spoken by
native speakers. All I hear here is Mexican style Spanish, and I
wonder how much different it sounds.

Castilian:

http://www.rtve.es/tve/directo/index.html

This is live TV, so content - and accents - may vary. Most of the time
it's just standard Castilian (our equivalent to your Standard General
American). Just select your preferred player (Windows Media Player
or Real Audio - this page isn't nice to non-Windows systems, sorry;
the Real Audio stream works on Mac, Linux and a few others).

Basque:

Basque looks like a random assortment of consonants, with the odd
vowel here and there - pretty unpronounceable. However, when spoken,
it sounds a lot like Castilian (or the other way around - Castilian
started
life as Latin spoken by Basques). And it really sounds good (to my
ears)
when sung. This is an old traditional song:

http://personales.ya.com/djpavon/audio/santa_agueda.mp3


There are other languages and dialects, though (too many, according to
some).