Tenants Two Family Home Both Playing Music Loudly - Need Advice

[Jennifer Buchholz]

Hi, I could use some advice.   This is a single family home converted to a two family home with one unit down, one upstairs.  The home is not sound proof and noise does travel up and down.  Both tenants are complaining about the music being too loud (the down tenant more than the up tenant and their relationship has completely disintegrated to the point where they will not speak to each other.  I've talked with both tenants and also sent an email reminding them they live in a shared space, need to be considerate of each other and  given they are in a shared space, some noise is inevitable.    I think the issue is continuing on both of them however two nights ago at 9:30pm the up tenant was playing music and the down tenant called the police.  After the police left, the up tenant proceeded to yell loudly for at least 10 minutes (the down tenant sent me a audio of this) and apparently (I couldn't hear the detail of what she was saying) made threats to the down tenant.   The up tenant comes from a program to help domestic violence victims so I have notified her counselor of all of this and she is going to speak with her as well. 

I'd love thoughts on how to handle all of this. 

Thanks,