This uses GUI interfacing,extract this file and in it copy the vorobo folder and then paste it in your current directory in Matlab.Also type in SpkrRcg in your command window,this will then open up the GUI from wherein all the steps are self-expainatory.
P.S:-
1.I don't have all the .m files they are in .p format,i could reconstruct some .m files corresponding to the .p files based on the available .m files,leave a message if you need them.
2.Also some other .p files are present which are not directly linked to this particular application such as "modimfcc.p".You can discard them or can use them if you need to advance the application.
3.Also look at speaker-D.doc,it might explain a few things.