Dear libsndfile user,

This library was developed on Linux for Linux. I am not a Windows user and maintaining this library for Windows costs me significant amounts of time above and beyond the time taken to make it work on Linux and Unix-like systems.

I therefore ask Windows users of libsndfile to donate to ensure that libsndfile's support for Windows continues. As long as donations continue to flow in at a decent rate, I will continue to release precompiled Windows binaries in sync with the Linux/Unix version. If donations are poor, support for windows will fall behind.

You are free to donate any amount you chose. As a guideline:

• If you are simply a user of libsndfile that would like to ensure that the development of libsndfile continues, a donation of $10US would be more than adequate.
• If you are shareware author that distributes libsndfile with your app and makes more than $1000 a year from your shareware, a one off donation of $50 would be appropriate.
• If your company is a commercial software house that distributes one or more products that ship with libsndfile, a donation of $100 every second or third year would be appropriate.

Donations can be made in Bitcoin to the Bitcoin address 15hVWemFiH6DLJ22SBYPk9b4fgWtxBEvfQ which can be verified by checking the following GPG signature.

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Thanks and regards,
Erik de Castro Lopo
Main libsndfile author and maintainer