But can you use a Bluetooth remote (which usually are Bluetooth headsets) but keep the sound coming out of the lossless headphones jack on the N900 itself?

I really badly need a remote, but the one I have found is a headset adapter to use normal headphones over Bluetooth. I do not want to do that due the lossy sound but I do need to be able to skip track when its raining and so I can't get the N900 out of my pocket.