1. Create directory with moh music. For example - /var/lib/asterisk/moh/queuemoh. Move new music there.
2. Create section in /etc/musiconhold.conf :
[queuemoh]
mode=files
directory=/var/lib/asterisk/moh/queuemoh
3. Add musiconhold parameter to queue or set in the database (realtime queue):
musiconhold=queuemoh
