Hi, im going to purchase the pioneer 565a dvd player and i'll need some surround speakers to go with it. The player has inbuilt decoders, does this mean that i don't need an amp? Im confused. Anyway, i'll at least be needing 5.1 speakers and an amp if necessary. Please guide me in the direction of some speakers that would be good for rock music and that are not too expensive (£100?). Thanks in advance (and sorry for so many threads with questions).