Thanks @ramen for the feedback. I have noticed some odd thing about bigger files.
I can't tell if it is a memory leek off some kind. But I will try to test some more to see if I can come with at solution.
Just remember that if you have more than 1 mp3 files in the same folder. It will allwais load the first in the list.
So if you have another mp3 file with simple bleep (mono sine wave) then this could be the problem.
All my files is placed in different folders for each pair of files (mp4 and mp3).
Hope this help to understand what the program does. I think I will implement some info what files
actly is been loaded so this not confused what has been loaded.
The problem is that if it is a memory leek, then I am sure it must be in the plugin I am using.
I will also see if there are some update on this.
But you are the first that has done a feedback on this. Thanks for that.
