Sorry, I think that it will be a Server problem, because no one in it thread has a problem, although, now I discovered that the PonySpenser is working, but it only works on LvL1 Dispensers (maybe I didn't see that in the Thread, my mistake), but the Dispenser Music doesn't works for now, again, maybe the path are not correct and still as my error. Here is a copy of my dispenser_music.cfg:
Anyway I will post a comment in its thread, asking if any server has a problem with the last TF2 Update (you know that a lot of plugins may not still working after a Update).