Success!!! My oscillator and program both work, and with a string at least 1m in length I can create the first few standing waves. All that means that I can go forward with the lab that I have. As always there is a catch and right now the catch is that I only have 2 working NXT bricks. I do have 2 RCX Bricks, but I haven't gone through the process of setting up leJOS for the RCX. I also would have to build a completely difference oscillator and Lego Digital Design doesn't seem to have the RCX parts built into the library. Maybe I'll have to go back to learning Bricksmith in order to make it work. Unfortunately I don't have any RCX bricks here at home and I don't know if I would want to try to get another version of leJOS running on my version of Eclipse. As it stands right now the law isn't going to be until Tuesday, so that gives me one day to figure all of this stuff out with the RCX or just bag the idea and only have 2 stations for my 4 groups. Whatever, I'll figure it out.

Oh, and I greatly improved upon the oscillator design. I currently has no idler gears and is easier to turn.