I cannot manage to get KDE4 + stepmania working. If I run StepMania I always get:

StepMania 3.9
Log starting 2010-12-24 14:52:48
Loading window: gtk
OS: Linux ver 020636
Crash backtrace component: x86 custom backtrace
Crash lookup component: dladdr
Crash demangle component: cxa_demangle
Runtime library: glibc 2.11.2
Threads library: NPTL 2.11.2
TLS is available
ALSA: Advanced Linux Sound Architecture Driver Version 1.0.23.
ALSA Driver: 0: HDA ATI SB [SB], device 0: STAC92xx Analog [STAC92xx Analog], 0/1 subdevices avail
ALSA Driver: 0: HDA ATI SB [SB], device 1: STAC92xx Digital [STAC92xx Digital], 1/1 subdevices avail
Couldn't load driver ALSA: dsnd_pcm_open(hw:0): Device or resource busy
Mixing 0.000000 ahead in 0 Mix() calls
Couldn't load driver ALSA-sw: dsnd_pcm_open(hw:0): Device or resource busy
Mixing 0.000000 ahead in 0 Mix() calls
Couldn't load driver OSS: RageSound_OSS: Couldn't open /dev/dsp: Device or resource busy
Language: english
Theme: default
Error: Couldn't find a sound driver that works

I found that in StepMania/Data/StepMania.ini I should add following line:

SoundDevice=default

That enables me to run StepMania, but I don't have any sound. Which is pretty bad for an application like this one.

I'm quite sure that the problem is in phonon that is blocking the audio device to which StepMania needs to access directly. I think that I can fix this if I run other (lighter) window-manager than KDE4. But that is not a solution occasional linux user.

Do I have any chance to get StepMania under KDE4 completely working?