How Do You Clear A Recordable Audio Disk??

I have these blank CD discs where I make my own CD's.


I had 25 but I used them all, how do I clear them for free?


Is there a program I can use? Or something else?


Please leave your suggestions...Thank youHow Do You Clear A Recordable Audio Disk??
If the discs are regualr CD-R's and not 're-writable CD-R's' then you can't erase the contents on the discs. They have to be re-writable to be able to be cleared.