WW - thank you again, this time for the 'Nanci Griffith' information. Knowing the (or at least one) artist you still have the best chance to get a recording of some particular song, and Nanci Griffith is at least known in Germany. I wouldn't have looked under 'Griffith' for 'Night Rider's Lament' otherwise (i.e. I wouldn't have looked for it at all). Now I only hope she did that song as charming as you (warm or cold voices are hardly interesting to me in that context).
Andrés - I've now found Shakira on the net but only pics, no sound clips. Pretty girl although she reminds me a little of Jean-Claude Van Damme: "Wanna be an actor? - Choose some expression, put it on your face, and never ever change it again." (Joke stolen from german - er - artist 'Loriot'.) What bre///? Will keep on searching (for a sound clip of course!). :o)