If I wasn't sure of the near-future cabling requirements, and who's to say that the requirements might not change in a decade more or less anyway, I think I would have a generous diameter conduit installed, with very gentle bends, so that I could pull through any cabling necessary at any time in the future. Of course the power circuit should not run through or immediately along side this signal-containing conduit. Additionally, and you'll have to check local codes to make sure, but if you have cable(s) running through the proper conduit, it may not have to be 'in-wall' rated cable.

[This message has been edited by bestbang4thebuck (edited June 07, 2004).]