I've tried a few from google searching and they all suck. The only one that's tolerable is quod libet, but it's very weird when I try to add anything to it. If I try to add music from another folder than it's default, all hell breaks loose, often the entire library just clears and can't be readded, then when I reopen it, half the stuff is there, half is not... it's just weird like that. Is there something that is more like winamp? Drag and drop perhaps? Though most things in Linux don't seem to have any kind of drag and drop so that might be asking for too much. But at least something that allows me to easily add folders to generate a library.