Nero is CD burning software, you want to edit (bring changes in original track) than use SoundEdit, or SoundForge (very popular) or if you want to just change the file format, then yes Nero can turn it (say u have mp3's and u want them to convert into Audio File format).
as well, I have used Realplayer v10 (free download) to convert mp3' to Audio Files. (this happened yesterday, so confirmed news)
Intel Core2Quad 2.66Ghz 12MB L2-Cache
4096MB DDR Kingston Hyper-X
XFX 9600GT AlphaDog
Seagate 2 X 320GB SATA2
LG L246WH Flatron 24"