I hope someone can help me. At work we have just moved offices and have downloaded Spotify to a computer we use for displaying some of our work on a big TV. By way of wanting to upgrade our DAB digital radio to quality spotify playlists, we need four wireless speakers. They do not need to be exceptional quality but they do need to be relatively cheap (budget might be an issue) and they do need to have a 20 foot range! Which I guess is quite big.
EDIT: One final hurdle I need to overcome is that we need four speakers and not two. I'm worried if I bought two lots of two that we couldn't just plug them both in.
Any help appreciated!