Personally, I use this for converting the new Audible enhanced  .aax  format.  Keygen is clean,
though I generally recommend opening such files in a sandbox.
Convert your audio and video at one click with an easy to use software created with you in mind.
The SoundTaxi simple and intuitive design will let you concetrate on your music and movies, instead
of technical details.
Easily convert music and movie files and various audio/video files to MP3, MPEG4, CD,
iPod and other MP3 player file formats at high speed and CD quality - legally.
SoundTaxi converts music and movie files from:
  iTunes
  Napster
  Zune
  Yahoo Music
  MusicMatch
  MSNMusic
  MusicLoad
  MTV / urge  
  MusicNow
  BuyMusic
  AOL Music
  Virgin Digital
  Beon Music
  Peer Impact
  iMusica
  Rhapsody  
  Wal-Mart
  AOL MusicNow
  Audible
  connect-europe
  akuma
  Listen JP
  ongen
  hmv  
  Bigpond Music
  Soundbuzz
  digirama
  imusica
  cdigix
  cingular mMode
  puretracks
  metro tunes
  fnac
With just a few mouse clicks you can enjoy all your songs and movies on iPod, any other MP3 player,
CD player, mobile phone or PC - without any restrictions.
SoundTaxi is easy to install and use with a very handy and clear user interface.
It lets you choose the compression level and it preserves ID3 tags for artist, album, title names
etc.
A batch mode and the drag drop function for folders and files allow to convert and unprotect large
music collections with just 1-click.
Supported file formats
WMA
WMV
M4P
M4V
MP3
RAX
WAV
AA
RA
MP4
SND
AAC
AVI
OGG
AIF
MP3
Any format Windows Media Player Supports
Audio books
Features List
very easy to use and install
converts any song that can be played with Media
Player to MP3, AAC, WAV etc for use with iPod, any
other MP3 player, CD player, mobile phone or PC
converts songs and movies for use with iPod, any other MP3 player, CD player, mobile phone or
Personal Computer
   converted songs and movies are playable with ANY device
restriction anymore
   converts practically ALL audio and video files
   batch mode for converting or unprotecting large
song collections
   allows to convert complete folder structures and
recreates these structures on output
   selectable compression level and output format
   super fast conversion, up to 50x the playback speed
in batch mode
   can convert in HIFI and CD quality