1. Clean up your "Temporary Inernet Files". Run Internet Explorer, Tools - Internet Options - in "General" Tab, click "Delete Files" then "OK" to confirm it.
2. listen to all of the music (do not surf other website for the time being).
3. in Internet Explorer, click "Tools - Internet Options". In General Tab, click "Settings", then click "View Files" in the popped up window.
4. in popped up "Temporary Internet Files" folder, arrange files by Type. scroll down. Select all the MP3 files. Copy and paste them to somewhere you perfer.
5. Finally, you might want to rename these files according to their original names.