Phonon MediaObject does not play entire queue

I have a simple program which creates a playlist of four .wav files. It enqueues them in a mediaobject and plays the queue.

The queue never plays in correctly with QT 4.8.x.

On one machine with QT 4.8.5, It plays the first two files, and then emits "finished()"

On another machine with QT 4.8.1 It will eventually play all of the files, but randomly repeats files in the list (for example, file 3 might get repeated 3 times before it finally plays file 4)

This code works properly on a machine with QT 4.5 (that is the version that code was originally written for)

I am attaching a simple example program.