how to convert .jpg & .mid to palm readable format ?

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Posted by wagonr
I use FunnyPhone for palmOS, and I would like to use my own screens and ringtones, but I can't manage to translate my .gif (animated or not) and my ringtones (polyphonic in .mid) into a .prc or .pdb format readable by my palm.

Anyone can help and explain me how to do this please ?

thx