Need 7.1 Decoder for PC speakers

[Flashanator]

Hi.

I have 7 70watt speakers from a PC sound system that I want to use. The sub is overkill so I don't want it & the audio pod doesn't work anyway.

Just looking for a Decoder unit that I can use with my sound card. Maybe I can upmix with a 5.1 Decoder? The DDTS-100 is the ideal one, but they don't make them anymore.

Any other ideas/suggestions? If anyone is selling a DDTS-100 id be interested.

thanks.