Glad to see we've narrowed the problem down.
Yes, it's a pity that Yamaha didn't keep up with their soft synths and soundcards. It should be possible to record using (say) the TTS-1 and then, once it's recorded, change the synth and play through the Coolsoft one.
All the best,
Noel
There is a big problem with recording using DXi, and playing back using coolsoft, if the Coolsoft synth is not processing pitch bends, then playing pack through that synth may work up til the pitch bend data, then the bend will go weird during playback.
Hang on a min,,,, I just had a thought, ok, when nothing is playing back, the coolsoft synth processes pitch bends with no problems, as I can hear it via the thru channel, the bend only gets weird when recording.
I'm preparing another small test file, which uses audacity to capture the output from BiaB when not recording and using the CoolSoft synth during a full octave bend,, I'll attach it here as sson as it's done.