So I am not sure what changed since whatever version of Android I was running on the G1 (1.5?) but on that, in order to change my notification tones, all I had to do was upload the sound files to the same place as my ringtones. I did so on the Slide and my ringtones are there but when I go to customize my notification tones in each particular app, it only gives me the options of the stock tones. Any ideas?