Jazzmandan: Thanks for the clue.
All the RB tracks I was trying to play are Midi.
When I uploaded a wave file to Reaper it played OK.
So I guess it's something blocking the Midi.

Under Midi Output Devices I have all the following listed as Enabled:
3 different SB Audiology Synths
MS GS Wavetable SW Synth
Line 6 Toneport UX1
LoopBe Internal Midi

Seems like one of those should play?
Any suggestions?

Noel96: Checked my speakers and all were OK.
Listened to your songs. Very professional, sounds like they should be on the radio.
Good job! Sounds like there's good chemistry there

Carkins