What to do with DISK Vol.X cds?

[jediknight007]

X above represents a number. I got these from Gallon's Shop and they each play a track when used but other than that, what are they for? It's a shame that they are wasted when used though as I would have liked to play them over and over again.

[Obscenity]

They don't have any other use that I'm aware of.

[G4_Hedgehog]

Nothing except some Sonic Team-related nostalgia for you.

[dude3282]

I've been wondering where to get those things. I checked the Photon Drop chart, it didn't help me.