"As I said in my previous post, that CMS file is not an audio or sound file. When you record a song on the keyboard, it actually just records your physical activity, not the sound of the keyboard - it records data that indicates what key you pressed when, how hard you hit it, and when you released it. It also records most button presses, slider moves, and knob twists during the recording process and stores all of that data (not sound) into the CMS file. Consider the CMS file as a computer program that tells the keyboard how to replay the "song" that you recorded. If you have ever seen (or used) a player piano, consider the CMS file the equivalent of the slotted paper rolls that tell the piano how to play the song. There is no way that slotted paper roll can be considered sound, but it does tell the piano how to make its sounds - or consider it the equivalent to the rotating pronged cylinder in a music box. There is no way that pronged cylinder can be considered sound, but it does tell the vibrating tines how to make beautiful music. My point is, it will do you no good to take the CMS file off of the keyboard other than for safe, backup storage, but to turn it into music (sound) you must play it back on the keyboard, itself." Ah ok! Thank you for taking the time to explain that to me. I thought that a CMS file was just like a different kind of audio file like an MIDI. In that case, I am now just saving the files from my keyboard SD memory card and then put that into my computer. I am glad that the WK-6600 let's you save files directly to an MIDI or .MID "If you will look on the back of your keyboard - at the right end, as viewed from the back - you will see a pair of connections marked LINE OUT. One is labeled L and the other on is labeled R. Those are the LEFT and RIGHT stereo sound outputs from the keyboard for connection into an external sound system - an amplifier - a recorder - a computer. With the WK-6600, this is the ONLY way you can get "sound" off of the keyboard and into a computer to convert it into an MP3 file. That USB connection to your computer is strictly for the transfer of data - not sound (audio). Once again, the only access you have to getting "sound" off of the keyboard is from the L/R LINE OUT connections into a recorder or a computer's audio input (not the USB connection)." Yes I found these. I will keep that in mind as another alternative to get sound out should my memory card break. This is great to know that there is another alternative. For right now, I have removed my USB connection wire all together and I deleted that Data Manager off of my computer (because I don't even need either of them to do any of this!) In the mean time, last night when I was messing with it some more, I found out that my version of Audacity does not support playing, recording, or editing MIDI files. It does not even support saving MIDI Tracks in a project file. All it does is it DISPLAYS MIDI files in the project menu (so you only see squiggly lines) that is all so basically it's useless for what I want it to do. But all was not lost! I ran the MIDI file in Zamzar and converted it to an MP3! So that worked out great and now I am able to get this keyboard to do exactly what I wanted to do simply with the SD Memory card! I am totally less frustrated with it now. (Thank goodness!) lol Thank you again for all your help and taking the time to write me back! I appreciate it!