Try the following:
open psclient.cfg
Push the \";\" in Front of the following lines so that it looks like this:
; Sound renderer
;System.PlugIns.iSoundRender = crystalspace.sound.render.software
; Sound Loader
;System.PlugIns.iSoundLoader.MP3 = crystalspace.sound.loader.mp3
;System.PlugIns.iSoundLoader.AIFF = crystalspace.sound.loader.aiff
;System.PlugIns.iSoundLoader.AU = crystalspace.sound.loader.au
;System.PlugIns.iSoundLoader.IFF = crystalspace.sound.loader.iff
;System.PlugIns.iSoundLoader.WAV = crystalspace.sound.loader.wav
;System.PlugIns.iSoundLoader = crystalspace.sound.loader.multiplexer
That?s the way my config looks ... i would suggest you to switch to Full Screen Mode by editing the File like this:
; Width/height of CrystalSpace visual
Video.ScreenWidth = 640
Video.ScreenHeight = 480
; Screen depth (currently supports 8, 15, 16, and 32 bits, NO 24 bits!)
Video.ScreenDepth = 16
; Use full-screen mode if available
Video.FullScreen = yes
Now save it and try to launch again ... good luck
Stoney