THUMPER.
i'm afraid i am bowing out of this thread , as its very difficult to advise further without knowing lots of info bout your rig. as i have an incomplete view of your set up.
all i can tell you is irrespective of daw.. reaper, or pro tools or rb /whatever daw....
1. there are certain protocols that needed to be followed for success..
2. if a user gets problems its usually related to one of the following.
a. wrong settings in win audio devices.
b. ditto for the sound interface user control panel.
c. ditto for the daw , in this case rb.

all i will say is ive used the biab/rb/reaper combo to
do 90 original songs and can highly recommend the software combo.

best
om
ps...from info so far, and i might be wrong it looks like
the reason your hearing nothing on speaker is you dont have stereo speakers hooked to stereo out of the 208 line out.
BUT rb is sending stereo out via the 208 which is the proper protocol.
i hope you get this resolved.
i'm not an audicty user but it looks like youre useing
win vanilla drivers rather than 208.

Last edited by justanoldmuso; 02/02/22 08:02 AM.
my songs....mixed for good earbuds...(fyi..my vocs on all songs..)
https://soundcloud.com/alfsongs
(90 songs created useing bb/rb)
(lots of tips of mine in pg tips forum.)