Long lockup before playing song

[Former user]

I have a few songs that are several hours long. When playing those Just Player locks for 30-60 seconds before playing.

It is as if it goes through the whole song before starting to play.

To reproduce: Download https://www.youtube.com/watch?v=lki1y2wa820 convert to aac: avconv -y -i in.mp4 -c:a copy out.aac