Support for MP3 Player Sync to PC Software is available from the publisher site.
Short description: Use this program to synchronize your PC and MP3 player. If your MP3 player appears as a drive, you can easily synchronize it with a folder full of mp3s on your hard drive....
To speed up your downloads we recommend you use a download manager such as 
Tag archiving utility for MP3s and other digital audio files. Backup and restore data to and from MS Acess 2000 database files, Excel worksheets, or delimited text files.
Automuter is an application that stays in system tray notification area (near windows clock). It can mute speakers when computer is locked, when screensaver is running. Alternatively, you can set up you own silent time schedule or mute by hotkey.
The purpose of this program is to find all mp3(ogg,wma) duplicates on your computer and remove useless
files from your hard drive. As this program performs just this single task it copes with it much
better than other more universal programs.
Melomania is a handy music collection software for Windows, which allows you to catalog music collection of any kind, from vinyls to MP3s, and provides you with a quantity of facilities to manage music database.
egrID3 COM Add-In for Microsoft Excel adds functionality to fast mp3 ID3 v1.x, v2.3, v2.4 tag reading and altering, playlists generation, FreeDB querying, file names handling and full Unicode support on all operations. Handle compressed v2.x frames.