From Forum Nokia Wiki

ID	TSC000001	Creation date	June 24, 2004
Platform	Series 40 1st Edition	Devices	Nokia 3200
Category	Content	Subcategory	Multimedia

Keywords (APIs, classes, methods, functions):

Overview

Certain MIDI songs won’t play in the Nokia 3200

Description

Some MIDI songs with a polyphony of 16 tones will not play in Nokia 3200. When the song is opened, the device displays the error message "File could not be loaded."

Solution

In this case the Nokia 3200 runs out of memory when trying to play the MIDI song. Remove one of the most memory-consuming instruments, #49 or #50, from the MIDI song.