i love the 8300 by far one of the best flip phones out there…
first you will need a microcard/sd slot adapter. they also make usb adapters if i remember correctly.
heres a mp3 hack for yah…this will allow for you to store mp3s on the phone instead of wmas
hit the “ok” button and then “0” . that will ask you for the service code. put all zeros in there. then goto music setting and enable mp3 support.
you will need to store your mp3 files in the my_mp3 folder in order for them to play properly.
another nice program to use is called bitpim. that will let you create/transfer ringtones, pics etc. search for it. For this you will need that usb adapter to the computer unless you have bluetooth.
If you want to get video/movies on ur phone then i suggest you download software called SUPER by erightsoft. That will let you edit and convert video files to the 3GPP format that your phone video player uses.