NFS:MW....MP3's ??

Can you put your own MP3s into NFS:MW for PC? I looked in the folders and it doesnt seem like you can. Just wondering if theres another way.

I know this problem because I had it before and I found that there is only NFS tracks can be placed or add.
In this particular MostWanted game extension is different and we can't convert the MP3's to that format also there is no coding in it that plays the MP3 tracks.