I tried computer speakers, but the ummm... thingie doesn't fit in the headphone hole. Sorry if I sound like a n00b. I don't know the technical terms. LOL
QuantumRN, note that you need to buy the Seidio adapter linked above by zerog, and not just buy a 2.5 mm to 3.5 mm adapter from any electronics store. The adapters in Radio Shack (for example) have thingies that fit the Blackberry hole, but they don't actually work.