Still, opinion from my professor:

Any musical works published after 1923, and virtually all commercial sound recordings, are still under copyright in the U.S., and it is a violation of U.S. copyright law to post them online without the permission of the copyright owner. If you want to be safe, do not post or download any music or songs online without permission.

In many other countries, sound recordings receive only 50 years of protection, so sound recordings distributed to the public before 1956 would be in the public domain in those countries. In the U.S., however, sound recordings made before 1972 are governed by state law, not federal
law, and in some states copyright protection for sound recordings is perpetual until preempted by federal law in 2067.

所有跟帖： 

• It might be safe to post only comments in YYKD, -青蛙-- ♂ (481 bytes) () 04/25/2006 postreply 18:56:12

• 猫妹的肺腑之言： -silly-kitt- ♀ (960 bytes) () 04/25/2006 postreply 19:25:38

• 猫猫诚心诚意普及一些版权法律知识，很感谢 -Forevermore- ♂ (68 bytes) () 04/25/2006 postreply 19:36:43

• 猫猫 is right!!!! -Sweetlife- ♂ (0 bytes) () 04/26/2006 postreply 01:07:25

• 谢猫猫的专业知识和善意讨论，受益非浅。晚安。 -青蛙-- ♂ (0 bytes) () 04/25/2006 postreply 19:45:30