Thanks for all the help! I have already my xmms playing mp3. Albert -- Albert Cardona Institute of Neuroinformatics Tel : +41 1 635 3052 University/ETH Zurich Fax : +41 1 635 3053 Winterthurerstrasse 190 acardona (at) ini phys ethz ch Zurich 8057, Switzerland www.ini.unizh.ch