I have logitech Z506 and SOUND BLASTER Z (which has Dolby & DTS). I was thinking 5.1 Decoder DTS/AC3 Dolby SPDIF Input to 5.1-channel Digital Audio Converter will be useful? Will it be any useful in gaming and watching movies ?
http://www.ebay.com.au/itm/5-1-Decoder-DTS-AC3-Dolby-SPDIF-Input-to-5-1-channel-Digital-Audio-Converter-HOT-/162660144407?hash=item25df4cd517:g:tBQAAOSwNf1ZqPN3