If you manage to get the file to work after you've appended .MP3 (or some other music extension) to the end of the file name, you can use one of these free audio converters to convert the newly-renamed MP3 file to any other audio format.
Ọ bụrụ na ị jikwaa ka faịlụ ahụ rụọ ọrụ mgbe ị gbakwunyere .MP3 (ma ọ bụ ụfọdụ mgbatị egwu ọzọ) na njedebe nke faịlụ faịlụ ahụ, ịnwere ike iji otu n'ime ndị na-agbanwe ihe ọdịyo n'efu iji tọghata faịlụ ọhụụ ọhụrụ aha ọhụrụ na MP3 usoro ọdịyo ọzọ.