APH, I cued nine mp3 files to be sent to the bp; they had a compression of = 1.5 and a time compression of 80%. Only one file transferred correctly = or at all for that matter; as each file was transferring, I kept getting = the message: "compressing time: 100 percent book port transfer bad = parameter format." I was then placed on an ok button, which upon = hitting it, started the transfer of the next file, only to have the same = thing happen again. I think that after the eighth file, I got the end = of transmission xylophone sound, so I am thinking it lost count and = didn't even try sending the ninth file. I have a hunch this problem is somehow related to the fact that I = previewed most of these files to see how they would sound with = compression. I say this because after previewing only a few seconds of = most of these files, and closing the software and coming back into it, I = could not preview again those files I had previewed before almost as if = they weren't reset or something; I don't know if this scenario of having = previewed them set them up for transmission failure, but I thought I = would mention just in case. Don