[LAD] audio conversion functions

I am relatively new to audio programming, but I have a task that requires converting between various audio formats: unsigned 16 bit linear to signed 16 bit linear u_law to signed 16 bit linear a_law to signed 16 bit linear unsigned 8 bit linear to signed 16 bit signed 8 bit linear to signed 16 bit Anyone know what the conversion functions for these would look like? Or even what a good reference is where I can find these? I have been googling around for about an hour and I have come up empty. ____________________________________________________________________________________ Be a better Globetrotter. Get better travel answers from someone who knows. Yahoo! Answers - Check it out. http://answers.yahoo.com/dir/?link=list&sid=396545469