Can anyone record a cover of a song I put on SoundCloud? My friend asked me if he could record a cover of a song that I put on SoundCloud called Gratitude (License: All Rights Reserved). What legal rights does my friend have? Does he need my permission? What benefits, compensations, acknowledgements, etc. am I legally entitled to? Does my friend have to pay me mechanical royalties if, e.g., he publishes his version of the song to SoundCloud such that anyone can listen to it for free?
In the United States, when you distribute a recording of a nondramatic musical work, the law grants a compulsory mechanical license allowing anyone to cover the song provided certain formalities are observed, and royalties are paid to the original artist. See 17 U.S.C. sec. 115. If your song falls under this section, then all that is required for your friend to cover it is to give you notice and to pay royalties as provided by the applicable statutes and regulations. Of course, you are free to negotiate other terms if you want to. But your song can be covered even if you don't.
Let’s work it through Is the work copyright? Yes. Are you making a copy or a derivative work? Yes. Do you have permission? No. At this point, it is prima facie copyright violation. However, various copyright laws have defences for breach. You don’t say where you are but as the USA is the most permissive in this regard we’ll use the USA. If it’s not legal there, it’s not legal anywhere. If it is legal there, it’s still likely to be not legal everywhere else. is it fair use? Almost certainly not. Wizards of the Coast (the copyright owner) already do this. While this service is free for creatures from the Monster Manual, it does drive traffic to their web site where they sell stuff. They also licence (presumably for money) others to do the same. Your usage would negatively affect the copyright owners market. This counts against fair use. Because it’s already being done, your work has virtually nil transformative value. This counts against fair use. You are copying a substantial part of the work. This counts against fair use. You are not using it commercially but neither is it for educational use. This is unlikely to matter. On balance: not fair use. TL;DR This is copyright violation.
The copyright holder has the rights in whatever he created. If you have created something new based on his idea, the law will generally not be interested; but if your expression is recognisably a copy with a few changes, he can prevent publication or demand royalties. If you are uncertain which side of the line you fall, you should ask a lawyer (or, more cheaply, write to the author and ask if he objects).
My friend should have taken his property with him, but presumably the host can't just keep it, especially after reaching out to them? Correct. However, the host does not have to do anything to facilitate its return i.e. they don’t have to post it to you. So long as they keep it for your friend to collect and don’t appropriate it for their own use, they are not breaking the law. If they do appropriate it, that is called theft or its tort equivalent, conversion. As my contract was with Airbnb and the host works from them, is there any responsibility on their part, e.g. Could I hypothetically open a small claims case against them? Or would any small claims case be directly against the host themselves? This is not true. You and the host each have a contract with Airbnb for the use of the platform. The contract for the accommodation is between you two and doesn’t involve Airbnb at all. In any event, there is no contractural issue here.
"I understand that a transcript of a podcast or video is a derivative work, and only the copyright owner can authorise creating a derivative work." You've answered your own question, at least for the US and Berne Convention (Wikipedia) signatories.
There's existing copyright infringement and future copyright infringement. Let's say you sold a million records with infringing contents. That's copyright infringement. It has happened, you can't undo it. Now you get sued. If you think you will lose, it would be a good idea to change the music to be not infringing, so the next million records are not infringing and add to the damages. It doesn't fix the infringement that has already been done, but makes sure there is no further infringement. And infringement after you were told about it and asked to stop might be punished more harshly.
Performers have "performers right" in any recordings of their performance. It is a "related right" (a kind of copyright just like authors rights). This gives them the exclusive right to distribute recordings of their performances. You are prima facie infringing their copyright by distributing recordings of their performances. In the US, the act of recording a performance isn't an infringement. http://www.wipo.int/treaties/en/text.jsp?file_id=289757#P97_7400 (the US is not a signatory) https://www.law.cornell.edu/uscode/text/17/114 http://www.ip-watch.org/2014/11/24/us-courts-recognise-new-performers-rights/
"There is a free mp3 app from a friend who asked me to publish it in my account, which I didnt check properly." You violated Google's policies by uploading an App that you did not have full control over and/or was not developed by you. As well, the App possibly violated Google's policies in terms of violating licensing for code libraries that were included, had code included in the App that was malicious or violated privacy, or was otherwise not compliant with Google's terms. Google's policies are legal contracts which you agree to when you open an account. You reserve the right to end the contract by deleting your account. They reserve the right to end the contract when their policies are not followed. See https://play.google.com/about/developer-content-policy/ "This sudden termination comes as a shock and Google's decision seem very rude to me." You may think it is rude, but Google is fully within its rights to terminate your account because you violated their terms. It matters little that you did not get the previous warning emails from Google; you are responsible for monitoring the account email for policy updates. If you’ve reviewed the policy and feel this termination may have been in error, please reach out to our policy support team. Try that; you might attempt to explain that it was honest error on your side.