Freesound being one of the big resources for original and free sample material is also one of the cornerstones of the app uFXloops Music Studio as it has since the beginning been integrated with Freesounds. 

Here is what is said;
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Dare 30 - Support the developers


This is something I have thought about before, but never managed to turn into a dare. Until recently I was contacted by a developer.

Us Freesounders moan frequently about how many times people use our sounds and don't give us proper recognition. We moan about some of our sounds having many downloads and no star ratings or comments. We moan about how much work and effort we put into those things and so little we get back.

Well... here is somethig for you to think about
On average, maybe it takes you an afternoon to go out and do a recording session. Maybe it takes you a few evenings after that to cut up and clean your recordings. And maybe a few hours to upload, tag, describe into Freesound.
Lets say, 20h total.

This is NOTHING compared to how much time DEVELOPERS spend creating their DAW and plugin applications. 100s or 1000s of hours of their lives go into this.
And I am talking here about FREE SOFTWARE DEVELOPERS: the folks that do all of this and then release it for free on the internet.

How many times have you used free music software?
How may times have you gone back to the developer to say thanks? or to give useful feedback?

This dare is about changing that.

If you have an android device, I am going to ask you to download and use uFXLoops.
The developer, Andreas, has contacted me and we created this dare together.
You can get uFXloops here:
https://www.ufxloops.com

Here are some additional links
tutorial: https://www.ufxloops.com/tutorial
videos: https://www.ufxloops.com/gettingstarted
For questions and FEEDBACK:
support@ufxloops.com

Andreas will be active in the DISCUSSION thread to provide assistance, if you need it.
If you do not have an android device you can also participate, just pick another piece of free software and follow the rules.
(*)Also make sure you read the NOTE about using uFXloops at the bottom of this post.

RULES:
1 - If you have an android device (mobile or tablet) please download and use uFXloops for your dare entry.
https://www.ufxloops.com
2 - If you do not have an android device, pick another FREE sound software to use. You can pick more than one, but keep it reasonable as you will need to follow the rules below.
3 - Make sure you can actually contact the developer (their website should still be active, there should be a way to submit feedback/messages or an email...) 4 - If you are stuck for ideas, why not use one of these:
http://www.kvraudio.com/kvr-developer-challenge/2014/
5 - Use your chosen software, really try to explore as many features as you can.
6 - Contact the developer. Thank them for their product and provide feedback - This is the most important part of the dare. (**) - SEE NOTE BELOW
7 - Post your entry with a link to a music piece created with your chose FREE software(s). You can use other tools/software/hardware/samples also, but make sure your selected FREEE sofware plays a major role in your piece. If it helps, think that you have been asked to create a DEMO music piece for that software.
DEADLINE for submissions: 15 Nov 2014, 11:00pm GMT.
8 - Use this thread for submissions only. For everything else use the DISCUSSION thread.
http://www.freesound.org/forum/dare-the-community/35497/?page=1#post76577

(*) - There is another big benefit about using uFXloops in this dare. If you provide feedback, Andreas (the developer) will give you an infinite Premium account on uFXloops - This will enable High Quality Mode and make the app absolutely add-free.

(**) - NOTES ABOUT PROVIDING FEEDBACK
Above all, be considerate and polite. Remember the developer spent a lot of time creating the software, so even if you don't like it and/or does not work for you, try to give useful and polite feedback. Remember that any issue might be specific to your DAW or Operating System. Here is an example on how to complain about some features that you do not like or do not work properly: 
"Hello X, thank you for taking the time to create the VST plugin Sound X. I like the distortion effect, but I found considerable latency when using it in Reaper. Works fine in Ableton Live. Also I found the filter to be a bit bland, there is no noticeable effect on the sound, except at extreme resonance settings. This happens in both Reaper and Live. I am using Windows XP on a 1GHz dual core laptop."
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To see the contributions and read comments etc please go here:
http://www.freesound.org/forum/dare-the-community/35496/?page=1#post76576
http://www.freesound.org/forum/dare-the-community/35497/?page=1#post76577

This is the three winners in the latest SunVox contest and these songs will be included in the next SunVox update... meaning that if you like what you hear you can really go to town studying what they are doing. 
Sorry to say that could not find the second track by Knyazivan but it is possible to listen to all the contributors by downloading a package of all songs packed in a special SunVox styleelee player: 
  http://www.warmplace.ru/

This upgrade brings the following features to the table:
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Waveform view
This allnew
view allows for better music visualization, scratching on the waveforms and
accurate cuesetting.
On top of that, 2 options provide advanced users with new actions:
beatgrid
editing directly on the waveform
zoom
with a simple pinch
Separate Tabs
A and B decks eventually gained their independence. A simple swipe gesture displays a different
panel on the left and on the right. Adjust the EQs on one side, while applying an effect on the left.
This enables you to create stunning combos that were never possible before on Android.
Key detection
Cross DJ now detects the key of the tracks. This is useful for harmonic mixing, i.e. mixing tracks
that sound well together.
Synced sampler
Dedicated drum loops triggered on the sampler are now synchronized to the main decks. They
play at the same BPM as the track currently playing.
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Here is a recently released video showing the latest additions.

This have been making the rounds the last week or so but thought that this was a nice post with alternative links and also to other space sounds. All free for use and it is not a small amount sample material everything from take offs to ground control saying cool things etc...
So think that after Nasa put up their sound archives on Soundcloud there will be a whole lot of space induced music being made!
To read the post and get access to the links:
http://createdigitalmusic.com/2014/10/nasa-posts-huge-library-space-sounds-youre-free-use/