I tried to use-
find . -type f -name "*.mp3" -exec mv {} . /;

But, it is saying that mv can not find the file.

I switched to bash and it worked there.

Although, this is working just fine-
find . -type f -name "*.mp3"

I also tried to do the following but with no luck-
find /full/path -type f -name "*.mp3" -exec mv {} . /;