AJAX MIXER How to generate AJAX XML data up/down stream/s mixer ?

Hi,

already asked the same question at AJAX group and got no answer.
Looking for input from experienced AJAX developer/s on how to write
script code to setn up client-side virtual XML data up/down
multi-stream management server ?

1. Script code to download/ upload many XLM files
2. Script code to replace XML by XML data format stream
3. Script code to filter XML data stream/s and generate upload stream/s
from
one or multi-download stream

I am aware that such code can be slow, especially client-sided
but I would like to develop such AJAX based XML data streaming script
code, acting as virtual server , especially for Google Maps
applications.

Let me call it AJAX MIXER like in audio applications.

ssumtion: