To make uploading to New Pod City as easy as possible, make sure you use the latest version of your browser (preferably Chrome) and the most recent Adobe Flash Plugin version. Also, make sure your mp3 file is BELOW 100mb. There are many free compression site sonline that will compress your file without losing sound quality. For example: OnlineConverter.com/compress-mp3
Use the "GOOD COMPRESSION" section under the Quality tab.