import subprocess

vlc = subprocess.Popen('vlc -I rc /mnt/disk/music/jubeis_theme.mp3'.split(),
  stdin = subprocess.PIPE, 
  stdout = subprocess.PIPE)


На выходе:

[0x9c87ee8] main interface error: no suitable interface module
[0x9bd08b0] main libvlc error: interface "default" initialization failed