I'm starting to look at investing in a home theater, and I'm confused as to why most receivers are 6.1 or 7.1 nowadays, yet speakers are mostly sold as 5.1 systems. My question is, if I get a set of 5.1 speakers, but have a 6.1 or 7.1 system, will I miss any sound? (The room isn't big enough to justify 6.1 or 7.1 in my opinion.) If I have the extra speakers, what tracks come out of them if the sound is in 5.1? Or do these speakers stay silent? Thanks for clearing up this confusion.