M4a 

Eufony is an all-in-one application ( Sound Manager + Music Player + Audio Converter ) for managing, playing and converting tons of music/ movie files. It handles a wide variety of formats and allows you to convert APE FLAC OGG WMA MP3 WAV......

ConvertHQ is your complete audio and video converter. It converts files to all popular audio and video file formats - for your computer, iPod, Zune, PSP, Xbox 360, PS3, Nintendo DS, portable media player, mobile phone, digital media appliance, games......

Enjoy the easy way to rip, convert, burn and play with this digital music software for Mac OS X. Music Man includes all the features you need from a MP3, WMA, WAV, M4A, Ogg Vorbis Converter, Ripper, Burner, Player. Rip from Audio CD. Convert most......

FairStars Audio Converter is a media file conversion tool to convert WAV, RealMedia(RM, RA, RAM, RMJ, RMVB), AIF, AIFF, AIFC, AU, Creative VOC, PVF, PAF, SVX, IFF, APE, FLAC, OGG, VQF, MP1, MP2, MP3, MP4, M4A, M4B, AAC, AMR, AWB, WMA, WMV, ASF to the......

 M4a