I think so, Yes
In most cases, yes! But you need to notice the limitation for each systems (in most cases, the central one), say the total output channel of speakers.
Most computer speakers with subwoofer have the power going directly to it, so it is needed to get an extension for all the other speakers.
The home sound system should have multiple HDMI inputs. It must be able to send amplified audio to at least five speakers. Also be aware about the system if you wan't the 5.1 you have three speakers, two surround speakers and a subwoofer. In 7.1 you only get four surround speakers.
No, it is not too small, however you will need to make sure you purchase appropriately speakers for a room of that size. If you go to a store that specializes in home theatres they will be able to show you what speakers would be best.
Speakers are the weakest link in any audio system. Always buy the BEST speakers you can afford. You won't be able to hear the difference in lower priced electronics but you will in lower priced speakers.
It is possible to replace your TV speakers. However, you will probably end up with better sound quality if you disconnect the internal speakers and add an external or surround sound system.
Plug the power plug into a wall socket and plug the jack into the green port on the back of your computer. The speakers probably have volume on them but you can change the volume from the computer if you want by pressing Start -> Control panel -> Sounds and Audio devices.
You should be able to get the sender separately at the dealer.You should be able to get the sender separately at the dealer.
It is not the speakers. It is your sound card driver. Go online and find the right one. You should be able to find the right driver to download for your system.
Cars typically run 4 Ohm impedance speakers, while home stereos as a rule run 8 Ohm impedance speakers. They don't really mix that well. And what connector you'd need is impossible to say w/o knowing what sockets you have on your home stereo. It's probably RCA though.
You can usually hook up to six speakers and a subwoofer (6.1).
You can have up to 14 rooms receiving sound if you have speakers built into your wall. You are even able to have them placed outside.
depending on the year of your legacy you should be able to access the rear speakers from inside of your trunk.