www.POCKETPC.com is the official Microsoft(r) site for PocketPC / Windows Mobile Software.
Active Sync is avaliable from
http://www.microsoft.com/downloads/r...DisplayLang=en
You can drag&drop to the Axim just like a extra storage device after you have activesync installed. Then listen to MP3's etc. If you have an InfaRed (IR) port on your computer you can also beam them back and forth.
Hope this helps.