I have a nokia 3100 which is supposed to be able to play 16 instruments at the same time, and i have created many midis that have less than 16 instruments, but when i put them on my phone it says "unable to open file". I have tried using the polyphonic wizard to shorten the midis, change their size, and once in a long while it'll work, and i don't know why. Does anyone know why it won't work, or if there are certain restrictions on length or file size of midi on the 3100?

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