KP3FT post a example of how to setup FLdigi and BPQ32.
In the bpq.cfg driver settings, you will have to make changes for your own setup, but it does work. For example, set the path to wherever your FLdigi executable is on your computer. Also, set the default FLDigi mode to what you want. In mine, the line “DEFAULTMODEM=PSK250R/1300” sets it to start FLDigi’s robust version of PSK-250 at 1300-hz waterfall frequency
; FLDIGI KISS AX25
ADDR 127.0.0.1 7342 PATH C:\fldigi4016-17\Fldigi-4.0.16.07\fldigi.exe