Steve,
The Phoenix line of decoders is primarily targeted at the large scale locos.
We use a lot of them in RC G gauge and riding scale locos. They use a
dedicated USB connection for configuring (and downloading) their sound. As
such, they use their own application to configure the sound. They have very
few things responding to DCC as far as configuration.
-Ken Cameron, Member JMRI Dev Team
www.jmri.org
www.fingerlakeslivesteamers.org
www.cnymod.com
www.syracusemodelrr.org
Ken Cameron