Advice for basic setup

[triggerthat]

Hi all,

I have a Sony 40V3000 and a rig with a Sound Blaster Audigy 2 and a IP35Pro motherboard (with an optical out).

I wanted to get some advice about buying a cheap amp/speakers on eBay and the best way to hook it up.

http://cgi.ebay.co.uk/Sony-STR-DB93...nemaSystems&hash=item3cb5a3a9e0#ht_810wt_1141

http://cgi.ebay.co.uk/Sony-dav-s300...emaSystems&hash=item43a5790e03#ht_2398wt_1141

http://cgi.ebay.co.uk/5-1-HOME-THEA...iFiSpeakers&hash=item4157597fc3#ht_1375wt_907

I am assuming I need a 3.5" jack from my computer to the AV?

 

[triggerthat]

Apparently it's the Realtek 7.1 HD audio. Is this better than the audigy 2? The audigy 2 doesn't have optical. Is optical better than analogue?