>>> I was just researching that for you...
>>>
>>> I went to the wayback machine.
>>>
>>>
http://web.archive.org/web/20030312104735/www.opsound.org/opsound.html
>>>
>>> That is the earliest page I could get to. Apr 07, 2003
>>>
>> Yes, I aready checked on the wayback machine.
>>
>>
>>> I has been straight BY-SA since then.
>>>
>>>
>>>> Most websites that host music don't require any license at all. You just
>>>> have to be the copyright holder and you must agree to let them publish
>>>> your music on their website. Other sites, like Jamendo, let you choose
>>>> which cc license you want to use.
>>>>
>>>> Probably, when I submitted my tracks it wasn't clear enough (at least to
>>>> me) that the music should be licensed that way.
>>>>
>>> So, it may be that those tracks are BY-SA and you may not be able to do
>>> much about it as far as people who already have them go.
>>>
>> This is true for those who acquired the tracks before today.
>>
>
> Or for those who get them from those people. If anyone has a valid BY-SA
> license from you, the cat is out of the bag so to speak.
>
>
http://creativecommons.org/licenses/by-sa/2.0/legalcode
>
> "3. License Grant. Subject to the terms and conditions of this License,
> Licensor hereby grants You a worldwide, royalty-free, non-exclusive,
> perpetual (for the duration of the applicable copyright) license to exercise
> the rights in the Work as stated below:"
>
>
http://creativecommons.org/licenses/by-sa/2.5/legalcode
>
> "3. License Grant. Subject to the terms and conditions of this License,
> Licensor hereby grants You a worldwide, royalty-free, non-exclusive,
> perpetual (for the duration of the applicable copyright) license to exercise
> the rights in the Work as stated below:"
>
>
http://creativecommons.org/licenses/by-sa/3.0/legalcode
>
> "3. License Grant. Subject to the terms and conditions of this License,
> Licensor hereby grants You a worldwide, royalty-free, non-exclusive,
> perpetual (for the duration of the applicable copyright) license to exercise
> the rights in the Work as stated below:"
>
>
http://creativecommons.org/licenses/by-sa/1.0/legalcode
>
> "3. License Grant. Subject to the terms and conditions of this License,
> Licensor hereby grants You a worldwide, royalty-free, non-exclusive,
> perpetual (for the duration of the applicable copyright) license to exercise
> the rights in the Work as stated below:"
>
> If you have given out a BY-SA license to anyone, it is perpetual as I get
> things.
>
> And when they pass on cpoies, the license passes with it as I understand
> things.