There's several remix programs that you can use, such as Acoustica and Garage Band. I've made a lot of songs on Garage Band, but I can only use it on my iBook
. Acoustica is like a Windows version of Garage band, and its pretty good to use as well. It has a trial period, and after that, you'll need to pay money to make more songs. I've been trying to find ways to convert my Garage Band or .aiff files into MP3 files, and then move them to my home computer, but so far, I can't find a means of doing it.