From: Retired Moderator
There is "player" software stored in the "firmware" of your device... i.e. to play the particulars, whether it is an mp3, wave, wmv, etc.
Yes, it is possible to change the firmware in your device to play video, providing it has a screen that is capable, and providing you know "everything" about your device's internal parts, how they function, and how to program it.
LG GSA H22L Firm 1.02
Samsung SH-203N Firm SB01
LiteOn SOHD-16P9S Firm FS0D