Comment 5 for bug 389659

There is a fix available which I figured out:
What I ended up doing was adding the Date Added column which specifies when the file was added to the queue and using this column to sort the queue(by clicking the Date Added heading in the File System queue). You could then hide the column once you’re done setting it up. Now files add up onto the queue as FIFO and not in any sorted order.

However, an enqueued file doesn't start playing, even if there is no other file in the queue. Couldn't find a fix for that.