I think it would be pretty cool if you could change the song playing on your spinet buy trading it 1 gil.

Jukebox <You can have this.>

Then after every tally your moogle could be like "Hey master! kupo~ Guess what I found sweeping up?"

/Moogle hands over the gil he found sweeping up.

AND....

When you open your mog house, your friends can change the song too by trading gil to the spinet.