I'm trying to use lua to set meta data on an mp3 file. I had read in the README that there is a set_meta function for the input module, when I call this, it appears to change the meta data key for the attribute I wish to set. However, this seems to only be a temporary change, neither the file itself nor the playlist file retains the changed meta data.
I was hoping there was some way that setting the meta data could be kept. Is there some additional function I would need to call to save the meta data changes, or otherwise is there another function that I would need to call instead?