Playing MP3 on remote Pcs

Hi,

we have about 15 Pc in the warehouse, and all of them have Speakers in the TFT. I am looking for a king of program (if possible freeware) so that I can make a list of MP3 files and play them. The control of the music will be done from my desktop.
And if possible that on certain hours it plays certain files (like some musci telling that it is almost time to go for lunch, home,….)

Many thx