I have a sfplay~ loop system working fine, however I am having difficulty get a bang to be produced every time it loops. Currently it only bangs on completion of audio file.

Specifying a final argument of 1 creates a single outlet to the left of the rightmost "bang on finish"

How do you specify a final argument? And would this even produce a bang every time it loops?

 Specifying a final argument of 1 creates a single outlet to the left of the rightmost "bang on finish"

looped-playback-acknowledgement

If you don't turn the sfplay~ loop on , you can simply use teh bang on finish of file to restart the file - also modified your patch to illustrate using position signal. Argument ordering may be confusing - Check the help file, it may be clearer. 

Thanks, that 3rd outlet is exactly what I was trying to get

Looped playback acknowledgement