You can copy them directly onto the card, through Windows Explorer or My Computer. By doing this, they will play. If you go through the Transfer, they will not play. There is nothing we can do about this, because of being unable to change the firmware any further. However, by copying as described above, you can play the files. Pamela Rader, TECHNICAL SUPPORT American Printing House For The Blind 1839 Frankfort Ave. Louisville, KY 40206 PHONE: 1-800-223-1839, Ext. 307 >>> donter@xxxxxxxxxxx 06/04/07 11:24AM >>> Since the bookport will only play constant bit rate mp3 files, does anyone know of a program to batch convert a bunch of variable bit rate mp3 files to constant bit rate files? Thanks. Don