You can really only charge tax on those items (DVD, CD, ETC) if it is an actual product, and was purchased wholesale (without tax). Giving a client a CD with there information on it is not taxable. You can however write off the cost of the CD from your gross annual income.
Write offs are the key to getting that total you owe down... each year our accountant gives us a number like that after looking at our gross income, but after we get all the write offs for things that number usually drops to 3-5k.
Either way... taxes SUCK, and are due in about 2-3 weeks. SUCK! SUCK SUCK!