Burning Help

This is really pissing me off!
Last week i burnt a CD and now it wont let me burn more CD's!
I use the WMP burning device and it's messed.
When i put the Blank CD in, it does the Converting but then it says it can burn the damn cd!
I need an answear by today because my grandmother wants some christmas music.
Please help!
EDIT:It's also ruining my cd's!
It burns one song and then chrases and then when i try to burn with the same CD it says put in a blank one in!
SOMETIMES I JUST HATE WINDOWS!

 

Don't use Windows Media Player to burn CD's.

Even when it works, it's very rudimentary. Try CDBurnerXP, which is freeware.