https://archive.org/details/TomConstanten?sort=-publicdate&tab=about

RIGHTS
On October 13, 2003, TC gave permission for shows to be hosted at the Archive. He gave permission for Dose Hermanos as well as his other material (listed in a separate "Tom Constanten" section here):

To our inquiry, TC replied,
Re: Your music in the Live Music Archive?
Sounds great to me!
Cheers,
TC

TC says the Dead's policy works for him in this instance:

STATEMENT TO MP3 SITE OPERATORS
The Grateful Dead and our managing organizations have long encouraged the purely non-commercial exchange of music taped at our concerts and those of our individual members. That a new medium of distribution has arisen - digital audio files being traded over the Internet - does not change our policy in this regard. Our stipulations regarding digital distribution are merely extensions of those long-standing principles and they are as follow:

No commercial gain may be sought by websites offering digital files of our music, whether through advertising, exploiting databases compiled from their traffic, or any other means.
All participants in such digital exchange acknowledge and respect the copyrights of the performers, writers and publishers of the music.
This notice should be clearly posted on all sites engaged in this activity.
We reserve the ability to withdraw our sanction of non-commercial digital music should circumstances arise that compromise our ability to protect and steward the integrity of our work.

Live Concert Database