you could always take off the baseboards and run it in the small space under there thats usually left for the flooring, and then when you get to the area where you want the speaker, well get out the drywall saw! run the wire up between the studs and patch the hole with some tape and mud, sand it and paint it. Might not look too great since your no drywall pro but heck, at least you'll have sound lol.

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