Kingston Flash Memory MBLY/4GB Mobilty Kit with 4 GB MicroSD Card Reader and 3 Adapters

I love this memory card with my camera but I can't figure out how to make it work with my cell phone. I have another memory card, which is a sandisk, that works perfectly with everything that I need to use it for but the only problem with that one is that it is a 1GB. I love the fact that this memory card is a 4GB and hold lots of songs and pictures. I wanted to use this one for my phone and use my old one (1GB) for my camera but this new one doesn't read the songs on my cell phone. I guess I need some help figuring out how to get it to work with my phone.Buy Kingston Flash Memory MBLY/4GB Mobilty Kit with 4 GB MicroSD Card Reader and 3 Adapters!