The only thing I can find there that seems to indicate linux compatability is the thread PMS Shutdown Addition :
viewtopic.php?f=12&t=8364&p=39222&hilit=linux#p39222
But having downloaded a few of the files from the OP they don't seem to be as simple as dropping the folder into pluggins. The main file actually seems to be a whole custom copy of PMS and with the source code I'm a little unsure as to what goes where.
Do you know if this is the thread where you got the plugin? Cheers
