corrupted files

can anything be done to filter corrupt files before they are downloaded. every mp3 i download has been determined to corrupted by limewire (not by my security program). this is a great waste of time and effort. this problem occurs whether or not i "group" my downloads. if i choose to continue to download these files, i end up with a zero MB file in my folder. are people just getting lazy and not filtering their own files, or is there a universal problem with limewire. Why would i want to spend money upgrading to limewire pro, if it's going to continue to be a problem (or would the upgrade fix it?) any recommendations for another mac compatible filesharing program?