Can someone try to tell me how to change "m4a" data into Mp3

It's probably simple for computer friendly people
On the other hand it might be a little difficult to explain to a neanderthal such as I.

I've got other skills

Rightly said:

Two questions:

1. Why?

2. What operating system are you using? (Windows/Mac/Linux/Other)

For windows: http://www.dbpoweramp.com/dmc.htm

eikonoklastes said:

Which is the best converter I have ever encountered. It also has LOADS of codecs for other conversions.

won't iTunes do it for you?

Rightly said:

I'm using SUPER©.v2007.build.23(July.04,2007). It should be able to convert
m4a also:
http://www.erightsoft.com/S6Kg1.html

the download link is this:
http://www.erightsoft.org...Rsetup.exe

It's freeware and supported input source file formats are:
- Video format:
3gp/3g2(Nokia,Siemens,Sony,Ericsson) asf, avi (DivX, H263, H263+, H264, XviD,
MPEG4, MSmpeg4 etc..), dat, fli, flc, flv (used in Flash), mkv, mpg (Mpeg I,
Mpeg II), mov(H263, H263+, H264, MPEG4 etc..), mp4(H263, H263+, H264, MPEG4),
ogg, qt, rm, ram, rmvb, str (Play Station), swf (Flash), ts (HDTV), viv, vob,
wmv
- Audio format:
aac, ac3, amr, mmf, mp2, mp3, mp4, mpc, ogg, ra, wav, wma
- AviSynth Script Files:
avs. Let you specify advanced encoding commands using AviSynth scripts!

SUPER © supports the conversion (encoding both ways, to & from ) of ALL the listed formats.