As of now I talked with the other admin and ceo of the company and we are just going to drop these mp3 files off these subdomains that we host and ask the people to remotely host the files. Since most of them are copyright protected we don't want any issues. As long as they are not being hosted by us then there isn't an issue with the music.
This also sounds like a solution

. Anyway, if the errors come back after mp3 files were moved away from the server, please update this post as this issue appears to be interesting enough to spend some time on it.