"Please can anybody convert musical notation into stupid programmers notation:
volume [%] - frequency [Hz] - duration [msec] - silence [msec]"

Here's a table relating musical notes (2 octaves around A 440Hz) to frequencies:
http://www.phon.ox.ac.uk/~jcoleman/LOGARITH.htm

Musical notation does not give absolute durations in ms; rather, it's a fractional notation - whole note, half note, etc...
This site gives a good explanation:
http://www.rocknroll.force9.co.uk/music/theory/notation.html

Or, if you want to get really heavy, here's someone's project dissertation on A Representation and Conversion System for Musical Notation:
http://www.flatline.org.uk/~silas/project/dissertation.html