Hi,
have few method:
- use HDMI audio spliter:
http://www.lelong.com.my/hdmi-audio-extrac...8-03-Sale-P.htm
or
http://www.lelong.com.my/hdmi-to-hdmi-audi...8-06-Sale-P.htm

- use HDMI to VGA with audio adapter, Monitor use VGA port
http://www.lelong.com.my/hdmi-to-vga-audio...8-11-Sale-P.htm

- use HDMI switch and support audio output:
http://www.lelong.com.my/hdmi-switch-4-1-a...8-06-Sale-P.htm

- Use optical to analog audio converter:
http://www.lelong.com.my/digital-optical-t...8-08-Sale-P.htm