Hi BluesMatt,

I do not remember having any problems with BiaB 2007.

Here are a couple of things to try:
1-in the piano roll view (PRV) click on track that is not sounding. You do this by clicking on the B, G, D, P, etc little squares. B = bass track, G = Guitar, etc. Look at the velocity. If they are all at zero raise them to a 64 or higher.
2- if the velocity lines are not at zero then add a volume. That would be CC7 at around 100.

There is a mixer but I forget exactly where it is in 2007.

Here are some pictures that may help. Note that my screen will be different from yours as I am using BiaB 2019. If this is above your current knowledge level then send me a Private Message (PM) and I will give you my email address so that you can send me the file and I will look at it.

Attached Files (Click to download or enlarge) (Only available when you are logged in)
PRV.jpg (259.96 KB, 111 downloads)
PVR
PVR data 1.jpg (765.5 KB, 2 downloads)
PVR data 1
PVR data 2.jpg (974.44 KB, 2 downloads)
PVR data 2
PVR data 3.jpg (991.69 KB, 2 downloads)
PVR data 3

I want my last spoken words to be "I hid a million dollars under the........................"

64 bit Win 10 Pro, the latest BiaB/RB, Roland Octa-Capture audio interface, a ton of software/hardware