How to launch playlist from command line

[jan-tamas]

I'd like to launch a previously saved playlist from a command line. I tried running:
gridplayer myplaylist.gpls
gridplayer --playlist myplaylist.gpls
gridplayer --playlist=myplaylist.gpls
gridplayer --help
gridplayer -help
but none of these commands work. Is there a way to do this?

Also, if the contents of the file myplaylist.gpls change, will gridplayer notice these changes and load the new streams and/or remove the old streams? If not, how can I add new streams to an already opened gridplayer using the command line?

Thanks for a great app!