It depends which bass.dll (and obviously decls) you are using...versions before 2.0 or after. In version 2.1 do like this:
BASS_Init(1,44100,BASS_DEVICE_LATENCY,0,0)
and it's intialized!
BASS_Init(1,44100,BASS_DEVICE_LATENCY,0,0)
and it's intialized!