FREE Advanced Audio Converter is a universal audio file converter, which supports all popular audio formats: WAV PCM, MP3 (MPEG Layer-3), WMA (Windows Media Audio), CDA, ALF2, ADPCM, GSM, DSP, A-LAW, U-LAW and Ogg Vorbis.

Also comes with an ID Tag editor for music files -- This tool lets you change the artist name, title, Album name, Year, Add comments, change Genre information and much more!.
Features:

Advanced Audio Converter Features
Conversion of different types of audio files
Easy to use (just one click of a mouse)
Convert multiple audio files at once (Batch Conversion).
Registered users get at least 1 year of free upgrades.
ID Tag Editor
Sound Recorder that records from mic or cassette tapes.

FREE Advanced Audio Converter supports all the popular audio file formats:
WAV PCM
compressed WAV (ADPCM, GSM, DSP, A-LAW, U-LAW, ALF2 and others)
MP3 (MPEG Layer-3)
WMA (Windows Media Audio)
Ogg Vorbis.
WMA (Windows Media Audio).
CDA