MP3Ext is an extension for the Windows Explorer. It enhances it, so you can get information in many ways:
A PropertyPage is installed, where you can fully edit the ID3-Tag An icon-handler for individual icons is included too Tooltips, when you simply leave the mouse over the MP3-file (only with IE4.0 Active Desktop)

Fixed

big compressed frames could cause mp3ext (and the explorer) to crash, due to a stack overflow.

unknown tags weren't preserved when editing and saving the ID3v2 tag

Program Information Category: Multimedia Type: Freeware Version: 3.4b22 Size: / Works on: Windows Product page: here