How do I add music to my nook?
Music File Formats
The nook can only play MP3 audio files. WMA (Windows Media Audio), WAV, or MP4 files will not work properly on the nook. If you have files in these formats you can download tools to convert the music files to MP3. A good source of cheap DRM free music is Amazon.com.
Adding the Music files to the nook
To add music to your nook, connect the nook to your computer using the supplied USB cable. On Windows, Click Start then Computer (Windows XP users click My Computer on the desktop). On the Mac click on Finder and look under "Devices". This will display a list of drives - two of them are for your nook. One will be your nook main memory and the other (if installed) will be your extra memory card. You'll see the folders "my music" and "my audiobooks" in the internal memory. You can place audio files in subfolders of "my music" and "my audiobooks" if you want to organize the files hierarchically. You can place MP3 files anywhere on your memory card. Simply drag and drop your music files to these directories. NOTE: If you put the mp3 files outside these directories for your internal memory they will not be found by the audio player!