Don: Unfortunately, I need a lot more information about the files that were = being sent. Were they Audible files? Were they MP3 files ripped from CD? = Were the files large or small? The best thing to do in this situation would be to try sending each file = by hand until you get the error. If you don't get the error this way, that = would also be useful information, though I suspect you will. If you find a = file that gives the error, I need MP3-specific information about the file = if you can get it, such as the bit rate, CBR or VBR, sample rate, and any = other information you can offer. I suspect the preview issue is separate from the sending issue, but I will = look into it more. Rob Meredith >>> Don.Barrett@xxxxxx 08/05/04 11:09PM >>> APH, I cued nine mp3 files to be sent to the bp; they had a compression of =3D 1.5 and a time compression of 80%. Only one file transferred correctly = =3D or at all for that matter; as each file was transferring, I kept getting = =3D the message: "compressing time: 100 percent book port transfer bad =3D parameter format." I was then placed on an ok button, which upon =3D hitting it, started the transfer of the next file, only to have the same = =3D thing happen again. I think that after the eighth file, I got the end =3D of transmission xylophone sound, so I am thinking it lost count and =3D didn't even try sending the ninth file. I have a hunch this problem is somehow related to the fact that I =3D previewed most of these files to see how they would sound with =3D compression. I say this because after previewing only a few seconds of = =3D most of these files, and closing the software and coming back into it, I = =3D could not preview again those files I had previewed before almost as if = =3D they weren't reset or something; I don't know if this scenario of having = =3D previewed them set them up for transmission failure, but I thought I =3D would mention just in case. Don