I have just been trying to figure something out with reference numbers myself...

I have several different databases and would like to set a reference number based on DB name then a number. I know there are a couple of options for the numbering convention, but is there any way to have a fixed prefix? For example I have a db that is for soundtracks only. Could I set the numbering convention to be sndtrk-#### for all the albums entered into that db regardless of how I have the artist or category?