If your model mp3 player does not appear under the mp3 Player product category current models page found at: http://rcaaudiovideo.com/, it has most likely been discontinued, and replaced with a newer model.
That does not mean we don't have information available to help you answer a question. Search the FAQ's using your model number and any information we have will be displayed.
Please also note, Canadian model numbers usually contain the letter C, but can be found listed without it. Eg. MC40 is M40. SLC50 is SL50.