Homeplugs and Simple Audio system

[visionary]

I see in the news that the new Sonos competitor uses Homeplug connection.

There seems to be a conflict here between using an assortment of devices (and witchcraft) to remove interference from your mains and then injecting a load more by using homeplug type networking. OK, I accept that the error-checking will address that for the homeplug signal but what about the, for the sake of argument, AV cinema system on the same ring main?

Would somebody technical like to try and explain this contradiction to my simple little mind please?

 

[stevenjonas]

I would like to share sound & vision around the house. I am aware of various devices to use homeplugs to share ethernet around the house, but what do I use to share hi-fi? The consensus appears to be that hi-fi is maintained better using a wired connection, rather than wirelessly?