Proceedings of the WSEAS International Conferences, Buenos Aires, Argentina, March 1-3, 2005 6th WSEAS International Conference on Acoustics and Music: Theory and Applications (AMTA '05), 6th WSEAS International Conference on Mathematics and Computers in Biology and Chemistry (MCBC '05), 6th International Conference on Mathematics and Computers in Business and Economics (MCBE '05), 6th WSEAS International Conference on Automation and Information (ICAI '05)