mehTunes is the easiest way to export iTunes playlist and convert M4A tracks into MP3 files, suitable for MP3 CD and non-Apple MP3 players.

mehTunes is unlimited shareware: limited neither in feature nor time. Shareware fee is just an ethical issue.

Using mehTunes options, it's possible to set advanced options for both encoding and output file naming.

Encoding:

• Choose frequency between 32kHz, 44.1kHz and 48kHz
• Choose base bitrate in a wide range
• Define quality through "Noise shaping and psycho acoustic algorithms" parameters
• Choose VBR option
• Using VBR, set minimum and maximum bitrate
• Using VBR, set compression quality in a 10 steps scale (from smaller size to higher quality)
• "Auto Gain" checkbox switches OFF or ON (accurate) the "ReplayGain" LAME function

• Optionally prefix filename with a fixed-width leading progressive number
• Optionally output only "safe" file names (alphanumeric characters, "-" and "_") based upon track name
• Also available "safer" and "8.3" naming facilities
• Live preview of naming
• Directly edit output names in tracks list
• Optionally group in Artist folders
• Optionally group in Album folders
• When using leading number and Album folder, track number is used

• Stop and resume export process seamlessly
• Double-click to reveal original track in iTunes
• Once a track was converted, it becomes unselectable
• Double-click a converted track to reveal it in Finder