Pyglet Media: unjustifiable memory usage

[snippsat]

PROBLEM: I created a player object and loaded/queued some mp3s but each time when I use the next_source method to play the next queued mp3 it takes around 50-80mb of additional RAM.

Pyglet use Python garbage collector to release stuff from memory.
There is a Player.delete() method that release resources immediately.
They doc for this is here.