How to link an audio mp3 file created on soundcloud to your Youtube account i want create a sound file on soundcloud and bring it to my youtube account.  How do i achieve this?
You may want to reupload the file to Youtube.

Convert the audio file (preferably your original, uncompressed file) to video with avconv -loop 1 -i cover.jpg -i original-track.wav -tune stillimage -r 1 -s 1280x720 -c:a flac -shortest -v error out-video.ogv (where cover.jpg is the still image you want to use for the video) or using a media converter like WinFF, and upload it to your youtube account.

You can place a link to the soundcloud page in your video description.