Yes; in fact licensing and royalties are the main way rightsholders are able to make an income from their works.
Ask the copyright holder for permission.
If there is no "fair use" exception the only way to legally use copyrighted material is to obtain permision from the rights holder.
You can use others' protected material if you have an exemption in the law or a license from the copyright holder.
Any material that you yourself have not expressley created is copyrighted. To upload it to myspace you would likely need to obtain legal persmission from the copyright holder.
1) Use only original material that you have created.2) Use only works that have fallen into the public domain3) Use only copyrighted material that you have obtained permission to use from the rights holder.4) Use copyrighted material in such as way that it will qualify as "fair use"
Copyright means that the book or writing or song belongs to the copyright holder. Anyone using or posting the copyrighted material without the permission of the copyright holder can be held to pay for the unauthorized use of the material. George Harrison had to pay because My Sweet Lord had the same melody as She Is So Fine. Using copyrighted material can lead to fines, loss of a job, and dismissal from school.
With the permission of the copyright holder.
To ask permission to use copyrighted material, write a letter to the owner of the material stating why or how the copyrighted material will be used. There might be a fee that has to be paid in some cases. A person might also have to sign a specific contract, too.
Usually, your agreement with the copyright holder will specify a notification (such as "used by permission") which must appear on or with the work.
If your use is not covered by a limitation, defense, or exception in the law, you need permission from the copyright holder. Typically permission is requested in writing, and is specific to the immediate need.
If it is copyrighted, then yes. Created by someone that has not copyrighted their material, then no.
Yes; notification is not required for protection.