Sorry I just realized how incredibly vague I was
My battery generally only lasts <48 hours. No media playback, just calls and txting.
Now that I have the unlimited browsing plan I think I'm burning through it even faster.
I was thinking of getting one of those little converters that allow you to plug a standard set of headphones into the BB's small headphone jack. The converter (9mm to 6mm audio headjack... or whatever) only costs $6. Then I would purchase a nice memory card to plug into my bb and dump some songs on there.
The more I thought about it, the more worried I was that given the relatively low battery life I already had, it may be better for me to simply get an actual mp3 player for the same price and give my battery a rest.