Yamaha DTXpress/DTXplorer/DTXtreme

Hi - Just joined the group.  I'm trying to hook up my DTXpress with a 
stereo receiver which is connected to a pair of speakers.  Years ago, 
I connected it to a TV with the cable I have and that worked, but I 
cannot get sound out of the speakers with this setup.  I have a cable 
connected to the phones port on the module and then to the two ports 
on the receiver for Video 1/Aux.

The only communication I saw on this list regarding this problem had 
as the answer not to attempt this and to use an amp.  This is the only 
possibility I have for the time being.  Can I make it work, even if 
it's not the optimal solution?

Thanks in advance for any help!