[X4StringDrive]

Have you saved your audacity file first? while your tune is still in audacitys screen...
go to ...file...then select "export as mp3"{if you loaded lame} and your ready for up-loading or "export as wav" ...then use your converter to change format to mp3.

The reason "live" {i'm not familar with} won't accept is, audacity is saving your tune in an audacity format...you must export it{your tune} as wav to use "live" {i believe}