“iriver b100”

Guide: how to watch YouTube videos on iRiver B100? | www.swf-avi-convert.com

?I have downloaded some YouTube music videos which are in .swf format. I want to listen to them on my iRiver B100. I tried some converters but they cannot support SWF videos. Can anyone tell me how to convert these YouTube videos to MP3? Or just recommend a good converter for me so that I can convert the YouTube video to MP3. Thanks very much