Is there good software to convert m4p to mp3 in batch?
 

Im in search of a Windows software to convert my full m4p to mp3s.
Right now in age, I didnt think it would be a hard matter to fulfill, but Ive been in search of over an hour now and the only thing I could find out are sharewareshared software what dont seem as work at all or puts that only say to burn them all to a CD, and then re-rip them, which at over 300 songs, I am determinately not going to do. All of them are currently formed in folders and correctly called with metadata all included too, so if possible Id also like to remain it... but in this case Im willing to look anything.
Not having high price, the program must be almost the same to convert m4p software.
Is there any advice?