The floppy disk itself can be formatted for macintosh or a pc - but the format is different for each. I'm not familiar with Lowrey organ. The specs online at lowrey.com only show the following for one organ I picked out and its floppy drive: 3.5" format, Record/Play LC or LX Performance, Play MIDI files, Capture Presets. . Try emailing lowrey.com from their website, or call servide and parts hotline (800) 451-5940 . What shows up if you open the disk with windows explorer? It's also possible the disk is blank - if you pop it back into the organ, can you playback the files? Ralph wrote: > I have floppy discs that are recorded from a Lowry organ. They say 2shd ibm formatted on them but will not play on my computer. what is wrong? > Ralph > > The NOSPIN Group has added a new feature on our website, > web based bulletinboard for questions and answers: > Visit our sister website at http://nospin.com Visit our website regularly for FAQs, articles, how-to's, tech tips and much more http://freepctech.com