How do I convert iTunes M4P to MP3?

To convert iTunes m4P to MP3 using Music Transformer
Step 1 – Set up iTunes importing
Set iTunes. Music Transformer uses your current iTunes import setting to import your music, so you’ll need to set it to the format that you want to convert to: [MP3, AAC, Apple Lossless, AIFF, WAV]. Do this before running Music Transformer:

1. Launch iTunes
2. Open the Preferences > Advanced > Importing
3. Select import Using:[MP3, AAC, Apple Lossless, AIFF, WAV]
4. Choose one as your import setting
   Example: If you want to convert to MP3, choose MP3 as your import setting.

Step 2 – Run Music Transformer

1. Launch Music Transformer
2. From the Convert menu, pick M4P
3. From the location menu, pick the location of the m4ps you want to convert
   – Select the play list containing the m4ps that you want to convert.
   – If you want to convert the entire library, pick “library”
4. From the Convert To Menu, select the format that you want to convert to: [MP3, AAC, Apple Lossless, AIFF, WAV]
5. Click the Transform button
6. Insert a CD-RW or use Virtual CD Drive software, like BurningThumb’s Virtual CD-RW (buy it bundled with Music Transformer and save $10)