Depends on what programmes you use on your comp, but simply put, you rip the CD to your comp in mp3 format. You can use others, but mp3 is the most popular. You should imo rip at 192 bit rate, but this is open to debate. Many posters ask for files at greater than 128 bit rate or even greater than 192, and some are happy to stick with 128 which gives them faster download times. I use itunes to do this, and all works efficiently and easily. I don't know about other ripping programmes.
Put the mp3s in a folder and go to Limewire Library, and select add share and browse for the folder, then rescan or refresh.
OR go to tools options> sharing and add from there.
Thanks for Sharing ... I hope this helps
