Previewing a file before it is complete is not always the easiest thing to do. Some you can and some you can't. I don't use the LimeWire Player. I have several other very good players. I let the file completely download after I do a Bitzi search to verify the file. I use various players before cussing about it. Windows Media Player, RealPlayer, QuickTime, What's the one LOTR advocate the VOC or something like that. Try it several ways. If none work...the file is no good. Thus is life on the internet..Trial and Error. Some files I don't do are the XML, asf, just to name a few. And watch out for the 851.7 zip file. It is hazardous to your health.