Disklavier

What do people use for playlist software on a Mac running Leopard? 
(connected via MIDI interface to a Disklavier) to play MIDI files downloaded 
from the internet?  I am still very new to these Mac capabilities.

The PC can use Yamplayer, van Basco, etc.  Although Yamaha's XG Works 3.0 is 
no longer available in the U.S. they are selling a different software called 
XG Edit that may be somewhat useful even though it is not a full sequencer 
program.  You can find it on the internet where you buy the Pianosoft disks.

Carol Beigel