I found a solution to reduce the stuttering in the audio output. It requires having "rootsh" and "Enhanced Linux kernel for power users" installed but not overlocking the cpu.
A part of the problem with the stuttering seems to orginate from the powermanagement and the dynamic scaling of the cpu frequence. Setting the minimal and maximal cpu frequence to the same value helps in reducing the stuttering a lot. simpy type in your xterm:

sudo gairoot
echo 599000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq

to set your allowed frequencies to 599-600 MHz
you can check this by typing:

cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq

Since having your cpu always clocked at 600MHz drains more energy and produces more heat than scaling between 250MHz and 600MHz dont forget to revert the setting if you don't need it by typing:

sudo gainroot
echo 250000 > /sys/devices/system/cpu/cpu0/cpufreq/scaling_min_freq

to you xterm.