i have 2 kenwood sl 29, 2 bookshelf speakers that i dont know the brand of , a sub without a build in amp and 2 small speakers that i both connected to center speaker. but its connected to a dvd amp thing. and then into my pc so its not really surround. if i go into windows sound and click test the sub doent work and the center act as fl and fr. so i want something like a lepai stereo but then surround but i cant find it anywhere
Assuming that your PC has 5.1 channel analog audio outputs you will need 6 channels of power. You can put a combination of amp boards together like these http/www.parts-express.com/cat/audio-amplifier-boards-modules/3464
with a power supply to drive all your assorted speakers.
A 6 channel car stereo amp plus power supply would work too.