FYI: A number of states have enacted tax laws and made changes to their respective tax codes that specifically apply to taxing digital goods:
Idaho, Kentucky, Nebraska, New Jersey, South Dakota, Tennessee, Vermont, Washington State, and Wisconsin, for example, all have laws on the books that allow the taxing of digital media.
My accountant, myself, a manager, and my publicist had a meeting about how to deal with new laws and old, often ignored laws regarding digital sales and the tax man. Trust me, I think we will see a big push towards taxing digital media because the government loves taxes and every state need more money.
The government has been pushing towards taxing the Internet and with their recent announcement about hiring something like (estimated to be) 16,000 new agents (most to collect Obama Care debts; the IRS loves huge fines and late fees) so perhaps the massive buildup will be to help collect digital sales taxes as well.