I need to transmit analog audio signals over a distance of 20 or 30 feet, and I'm looking for advice regarding how best to do it. Running cables through walls is not an option in my situation, so I have been looking into using non-metallic surface-mounted cable raceways. But the only kind I've found are mounted using adhesive, which I don't like. If you know of a source of non-metallic raceways that are screwed onto the wall and are not too much of a pain to install I'd love to hear about it.
I've also thought of using a wireless link for this purpose, but I don't know much about these. Would that be a good way to go? If so, do you have any specific products to recommend?
I'll be grateful for any advice.