Is
this the LineX you're talking about? If so, its specs say only a range of 30 feet, which would not meet your requirements. The other issue would be getting USB on your Axim. As you are already aware, you will need to get a CF USB host card; unfortunately, those who have tried these cards have not reported good results. I still think the best way for you to get music from your PCs to your stereo would be to use a simple FM transmitter that plugs into the audio out of your computers. Hopefully someone else will have a better idea.
