This amp will do the job unless you want mega volume, in which case you got to pay more:
http://www.ebay.co.uk/itm/Onkyo-TX-S...item35de1f57f9
For music best to have the same speakers all round so that means more Ruarks:
http://www.ebay.co.uk/itm/Pair-of-le...item1e94d0664d
Centre speaker more difficult, I know Ruark did use to make them. Problem is so much programme in 5.1 goes through it you need a really good one for music and they are pricey.
Current Lash Up:
TEAC VRDS 701T > Sony TAE1000ESD > Krell KSA50S > JM Labs Focal Electra 926.