migle@baltix-linux:~$ python
Python 2.4.2 (#2, Sep 30 2005, 21:19:01)
[GCC 4.0.2 20050808 (prerelease) (Ubuntu 4.0.1-4ubuntu8)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import pygame
>>> import os
>>> os.chdir('/home/Multimedia/Muzika/Karaoke/karaokemanija.lt')
>>> pygame.mixer.init()
>>> pygame.mixer.music.load('Valinskiene-Buksalia 19067.mid')
>>> pygame.mixer.music.play()
>>> pygame.mixer.music.stop()
>>> pygame.mixer.music.load('Valinskiene-Nesakyk_sudie 8762.mid')
Now pygame freezes with 99% CPU load, so I killed python :(
Terminated
migle@baltix-linux:~$ 

Bug exists in pygame from Ubuntu Breezy and Dapper :(