Vegetano1 Wrote:EDIT: here is a settings of a xvid file with 6 channel audio wich works fine on the PS3 i just dunno how to convert a vid with XVID4PSP with these settings,. :(

If PS3 supports AC3/DTS, I guess you could muxing the audio stream into it, though IDK if MP4Box supports it.
If it's an AVI, get VirtualDub Mod, load in the AVI, go Streams » Streams List, select the audio and Demux it somewhere.  Then get YAMB, go create MP4, and load your already converted MP4 from Xvid4psp, untick any audio streams in there, then load the audio stream you demuxed from the AVI, and see if you can make write out an MP4 like that.