Free Mp3 M4a Wma Converter V1.6 is a freeware for audio conversion.

With Free Mp3 M4a Wma Converter, you can convert all your audio files to MP3, WMA, OGG, FLAC, WAV, AAC. All major formats are supported in entry as: MP3, WMA, AAC, M4A, MP4, MOV, FLV, AVI, MKV, OGG, FLAC, WMV, ASF, AC3, APE, APL, ALAC, MPC, WAV...

This freeware can also rip all your audio CD. Try it, it's very fast and simple! insert your favorite CD and this freeware will automatically connects to CDDB to retrieve CD album name and song's names... it can't be easier.

Example of possible conversions: