LIFA is outdated and no longer supported. You should not consider using LIFA. Instead, you can consider using LINX. So, I'd recommend posting on the LINX forums. When you do post, you'll need to provide more details about your sensor, ideally, you should provide a link to the sensor's datasheet so that we can determine the feasibility of using the sensor with Arduino and LabVIEW via LINX.
http://www.labviewmakerhub.com/linx