I'm using a 4GB card with this project http://www.siliconchip.com.au/cms/A_111521/article.html Playback is with another PIC via 4066 switches across the Up, Down and Play buttons What I've noticed is that the order of the tracks as seen and displayed by the dsPIC is not numerical. For example, with the file names 01 to 10, the order might be 07 08 09 10 03 04 05 01 02 . Groups of consecutive names, not how I intended or want Tried two ways. Copied as an alphabetised group from XP and singly onto a freshly formatted card. Same result Is there a way to force the files into a specified order on the card or do I presume correctly that sorting is what the reading device has to do ? wbr -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist