AV Audio Converter is a specialized audio conversion tool which allows users to change the formats of your audio files into just about any format you'd like, for FREE. This program supports a wide range of input audio formats such as MP3, WAV, WMA, OGA, OGG, FLAC, AIF, AIFC, AIFF, AAC, M4A, MP4, CDA, CUE, APE, APL, MPC, SPXL, TTA, WV; and numerous output formats like AAC, APE, FLAC, MP3, MP4, MPC, OGG, RAW, SPX, TTA, WMA, WV. Users can input separate audio files one by one, or a whole folder as one because AV Audio Converter offers the possibility of batch file conversion. In addition, this software doesn't simply transform your songs to different formats, it also allows you to configure other audio parameters, including specifying encoding settings, adjusting the quality of output files. The conversion process is completed in a timely manner, while the interface is intuitive yet simple for all users. This is a good free audio converter, and worth trying out if you often need many audio formats to play on different media players.