AV Audio Converter is a professional solution for converting all types of audio files. The interface is uncluttered and easy to use. AV Audio Converter is well documented and suitable for beginners and advanced users alike.

MeowMultiSound is a free sound converter that supports mp3, wav and ogg sound files. It allows to convert files in both direction. Features drag and drop support and an option to generate Id3v1 tags common to several files.

PassMark SoundCheck is a Windows based application that allows users to test their PC sound card, speakers and microphone. Verify that your sound card can record and playback sounds at various audio sample rates.