Now i tried to set up my little Project: A music player which plays mostly MP3 from SD/USB. Simple i thought.
First problems: Sound was not working at all. No Analog, No HDMI. I got this fixed with help from the Wiki.

Now i just had no idea how to play music, i installed VLC because i knew that from my Windows PC, tried out: no Audio playback at all. I searched around for another Music player and found one i really like: LXMusic.

Now playing Music works fine but when i switch to the next track or skip a few seconds it begin stuttering and will only stop by closing and reopening LXMusic.

I clocked CPU to 900Mhz to improve speed a bit. Hope i didn't kill something with this.
What i'm doing wrong? Why does simple music is stuttering?