unfortunately, was an onen a few months back.
Also, important that the mourners have a shomer with them at all times, during the week of shiva, in the daytime and the night time, inside and outside, and this applies to Shabbat as well.
As far as music, for a mourners for a parent, no music during the year,(unless parnassah is involved). For mourners of a spouse or sibling, no music for 30 days.