How to convert tracker music into wav,mp3, etc.?

With XMPlay

Launch XMPlay :) Go to "Options and stuff". In left panel choose "Device". In "Output" group in "Device" combobox choose "WAV Writer". In "File writing" group in "Directory" choose path to folder in wich wav file will be saved. That's all - now open your music file and push play - it will be saved in choosen path in WAV format!

With WinAmp

Launch WinAmp :) Go to "Preferences". In left panel choose "Plugins-Output". In "Output plug-ins" group choose "Nullsoft Disk Writer plug-in" and configure it as you wish(choose folder, etc.). That's all - now open your music file and push play - it will be saved in choosen path in WAV format!
 
I will not tell you how to convert wav to mp3 - Google it!