At this stage there are really very few terms and conditions. You get what you see, you edit what you want, and hopefully it may be useful to you or someone else.
About the only thing we will promise is that any personal data you may submit on sign-up (e.g. email) will not be used for nefarious purposes. A-la Google's "don't be evil" sentiment.
Tracks is covered under a Creative Commons Attribution Share Alike license. Unless otherwise noted all content may be reused as per the terms of this license. A summary of this license is reproduced here:
Attribution Share Alike
"This license lets others remix, tweak, and build upon your work even for commercial reasons, as long as they credit you and license their new creations under the identical terms. This license is often compared to open source software licenses. All new works based on yours will carry the same license, so any derivatives will also allow commercial use."
Please refer to Creative Commons for full detail.