I recently found that foobar2000 is enlisted on Ohloh. But as far as I know, the only part of foobar2000 that is open is its SDK, while the Ohloh record is completely worded and organized as if the player itself was open-source.
I love foobar2000, but still I don't think it belongs here. It probably wasn't done in bad faith; people might just get confused with its licensing scheme. I'm opening this thread for discussion, as I guess if I just deleted the project without any prior warning people who spent their time writing reviews and all wouldn't be happy to have all their effort discarded with no explanation of what happened.