Volume adjustment tool in Openpli?

Hi guys!

I am looking for a Volume adjustment tool like there is on OpenATV 4.0

I can mark a channel in the channelslist, and then set this channel to +/- XX amount.  Then when I zap, it automatic sets the volume up or down when I come to a loud or silent channel.

THis is very handy, but the same function is not in OpenPli or in download list!

Anyone know how to manually install this function, or maybe it comes with an update of OpenPli ?

THANKS GUYS!