Question about Music label from Music mixer object

I was wondering the same thing. I think that is all there is to it. My Sim has been putting out records every other day. I had her trying everything out a little at a time so she could learn lots of different skills and move up slowly to stardom. But it seems like this is all there is to it.

Does anyone know what you do with your tracks? My Sims inventory just builds up with the tracks and I couldn't find any kind of storage to keep them in. Can you delete them?