Absolutely. Royalties from licensing are what gives intellectual property real value.
You'll never know for sure, unless you get his/her permission personally or he or she uses an open content license giving you this permission.
With permission from the copyright holder, yes.
If you used copyright images anywhere (including a website) without the owner's permission (for which he might want a fee to be paid) the owner could use the law to make you pay.
Copyright permission refers to a license from the owners of the copyright to use some of their exclusive rights, such as the right to make copies, publicly perform, or adapt a copyrighted work. Like any other contract, copyright permission can be oral or written, within limits set by state laws.
You need permission from the copyright holder or an exemption in the law.
If your use is exempted in the law, you would not need permission.
Yes, unless you have permission from the copyright holder or an exemption in the law.
That is a description of copyright infringement.
Typically you would first need permission of the copyright holder.
I don't know where Answers.com got permission to sell music by Cara DeFriece. That's the music that I paid a lot of money to record, and I'm not getting anything from Answers for it. I own the copyright...so why do you reap the benefit?
With the permission of the copyright holder.
You have to get permission from the copyright owner.