How do I make my room soundproof w/out professional equipment? I listen to loud music at maximum volume, but even with headphones and with the air conditioning on, it always wakes my family up..

I've seen people use egg cartons to create soundproofing on their walls, though I've never tried it myself...

Here is some great, brand-new info on DIY sound proofing. Serious Materials just launched a new and improved sound damping glue, QuietGlue Pro (http://www.quietglue.com). QuietGlue Pro’s improved sound damping technology delivers the highest quality noise control at 30% lower cost compared to Green Glue. In fact, QuietGlue Pro outperforms Green Glue in new, back-to-back testing. Learn more about these recent tests in the white paper QuietGlue Pro vs. Green Glue plus see all of the underlying test reports online. QuietGlue Pro is the perfect solution for small soundproofing projects if you are Doing-in-Yourself. However, for larger residential, light-commercial or commercial applications sound damping glue does not make sense. Soundproofing drywall panels like QuietRock ES are by far the most cost-effective solution when you factor in labor costs. Applying glue to two panels of drywall more than triples the installation time (again see the white paper above) compared to the installation of sound proofed drywall panels.

instead of spending money on making your room sound proof.. get some nice quality surround sound headphones from sony/bose/panasonic.... all of them have awesome effect.. you dont need home theater system at all

Some drywall and quietglue should do the magic for soundproofing. Don’t bother with Green glue. It is $40 more expensive.

Some drywall and quietglue should do the magic for soundproofing. Don’t bother with Green glue. It is $40 more expensive.

Grab yourself a couple of tubes of Green Glue and some drywall. Squirt the green glue on your walls (using the existing surface is fine - no scraping paint or wallpaper); screw the new drywall over top of the Green Glue; seal the seams with acoustical caulk; and repaint your wall. Green Glue works to both block and absorb sound. If you use this material to soundproof your room you'll notice a HUGE difference - and so will the rest of your family. http://soundproofingwithgreenglue.com/?page_id=12

Foam all over the walls, floor, and ceiling. The type called "egg-crate".