I'm thinking of making a commercial Pi project which would sell as a complete module with Pi and software (written in C) as a sealed unit. I need to play back mp3 files but I'm having trouble finding a library or source code that has a licence that suits me. I don't want to release my source code and the software I sell is essentially embedded into the device and the user has no access to it.
I'm happy to buy an implementation (assuming it's cheap) and I'm happy to pay a small (tiny) royalty per unit for mp3 playback if needed.
Can anyone suggest a library or source code to either suite my requirements or someone who are willing to licence their code to me commercially?