Freesound Forums

My friends and I put together a 25 minute piece that we would like to play at a music festival on a limited basis. It's just for entertainment during the dinner break when there are no bands playing. If the work is only played aloud, and not distributed in a recorded fashion in any way shape or form, how should we credit the sounds we borrowed from freesound.org? Or do we even need to? There are dozens and dozens of them. We do want to thank everyone and credit their property and work, but it would take five minutes that we don't have to read the list aloud.
Eventually we may put up a website for the performance and other similar works we do in which case it would be easy to credit everyone that contributed.
Again, this is going to be an audio performance that we're not going to post online for a while if at all, and not reproduce in a distributable fashion.
By the way the festival is technically a commercial venture, but is run on a 'break even' basis. The recording will be just a bit of side entertainment. I just want to make sure we're doing the right thing here.
Thanks.

I am not an expert in copyright issues, but I believe the CC licenses say that attribution must be given 'if it is practical to do so'. If the work has no 'solid form' and is not uploaded, if it is to be played simply as a recording giving attribution could be difficult.

Are there any printed materials that are presented or displayed? Is the music festival advertised online?
It could be possible to give attribution in these places. A link to a separate credits page where the proper attribution is given is enough. Does not need to appear in the main text of the webpage.

The CC non-commercial licenses forbid comercial use - so you can not use them for work that is to be sold/rented for profit or as part of advertising for work/activities that are profit generating.
Even if the samples you have chosen and used are on a non-commercial license, you should still be OK.
Provided that the playing of this piece is not a main attraction on the show and that it is not used to advertise the festival or as a part of any advertising.

If you want to be really nice, you could drop a message to the creators of the sounds. Or post a comment on the sound itself, saying "I am using this sound for a piece that will be played at festival X."
If you are not able to give attribution (as discussed above), you could say "the piece is simply played as a recording during the breaks, so at the time of the festival it is not possible to give attribution. But the piece will be uploaded online at a later date and full attribution will be given at this time."
"Good faith" is an important part of this all. I do not think you will have any problem.

I have no input or control over official printed materials for the festival, but I think I have come up with a solution. We have printed a handbill to be given out that lists all of the attributions. It's over half a page just for that, so it would be impractical to put it on any advertising or program for the festival itself. If you guys think that would be sufficient, let me know.
I like the idea of personally thanking contributors. I may start to do that as soon as I can, especially for the ones that are really important to the piece. There are about fifty of them, so it will take a little while.
Thanks for the advice. I'm fairly new to the sound sharing world. Back in the day we had to make up all he sounds on our own. This is not only easier, it makes the work sound much better.