it depends on what you are having in your mind to build..you can create selfprovided player, which will play a tracks which already are converted into same movieclip as player is , this means you are creating the player, and importing some tracks..so player will not need to download some content using traffic, it will use local approiments,and the second way is that you can create an XML based player in Flash, it will play any source you point it to download from..so about detailed information how exactly you can construct the player, search the Google,it'must not be hard to do !enjoy