> Any body here know how to obtain Polyphonic Ringtone from a NOkia MMS phone after receiving it from a MMS
Open the MMS message, scroll down to the ringingtone part and save the ringingtone to the gallery.
> Knowledge in knowing how to setup a emulator to receive actual MMS also can.
You can use MMS Java Library 1.1 (originating application example) to create and send MMS messages to the EAIF emulator. You can also configure the EAIF emulator to forward the message to Series60 emulator editing the eaifem.properties -file found under EAIF emulator. Use search to find out more.
> I understand that the MMS content can be coded in a way that prevent from extracting from a phone. Is there any other method?
MMS message as such cannot be extracted from the phone in any way.