[Dreamkiter]

this will help:

don´t use pivos-xbmc releases or the like... audio add-ons, mp3 -playing sounds are clicking and stuttering

If you use the geniatech xbmc release, the sound is fine and clear.

Could you post a download link to a newer working releaseof xbmx that is Build for this hw? I'm not sure, but for ne it seems as if geniatech builds are focussed on atv520 devices without optical toslink audio out connections. I think i'm actually using a xios build from the beginning of may. Aren't xios builds the same as geniatech ones
By the way: i don't use addons and the mp3 sound ist stuttering and very flat, like mp3s with a bitrate at 80kbits