Here is info for Dalbeattie, I don't know if the club is still running:-
Dalbeattie Folk Club - The Pheasant Pluckers F.C. runs fortnightly, in the Pheasant Hotel. Dalbeattie. On Thursday evenings from 9.00 till whenever; Sessions, Guests.-Sessions, Guests, etc. For more info. contact; Phyllis Martin. (01556) 612306
However, the last time I went there the club was held upstairs in a pub in the High Street - The Crown possibly?
Also check in what is known as the "Two Minute Silence", the Dumfries and Galloway news. It might have listings for what is going on. The newsagaents and shops in CD frequently have posters announcing ceilidhs etc, so check that out too. Good luck and let us know how you get on.
Finally, use Google to search for folk music Dumfries (and Galloway) but the link for Galloway folk seems to be dead.
Julie - I have relatives in Auchencairn and have been to that session a long while while back, predominantly tunes I seem to remember.