Angie: I need to know much more about your file. Seeing it would be best, but I = suspect it is large. Do you know the sample rate of the MP3 file? Are you using time compression, pause compression, or both? If you are = using both, does just one of the compression options work? Can you tell at what phase in the transfer process things break down? In = other words, what message is displayed in the title bar of the Sending = dialog just before the program disappears? Rob Meredith >>> matneyar@xxxxxxx 11/09/04 10:36PM >>> OK, it's my turn to have a "twilight zone" experience with my otherwise = wonderful Bookport ... I tried to send an mp3 that I created with my Soni ICD P-28 recorder to = the Bookport. I tried twice with compression rates of 1.8 and 1.7. Each = time, the transfer=20 software started to send the file but apparently aborted before it was = complete. At that point, Bookport Transfer closed itself. I sent the same file without compression, and it worked fine. could the format of the file have been a problem? It's a 48K mono mp3 = file. Has this happened to anyone else? Angie