John & Matt, Thanks! I found the problem......played some other Sonar files with the metronome & they were in sync! So I reckoned something had gone amiss in the "drag & drop".
I deleted the problem file & recreated it in BIAB. Checked it.....gave it a new name....dragged it into Sonar......all is OK! ***You may have a point about Audigy Matt......I'll drop a few hints for Father's Day!
Regards, Joe G.