How to add songs in iriver e10???

have you used itunes before?

well it is very similar, all you have to do is:
1. install the CD that came with your product (you might have to restart your computer after this)
2. open the program you just installed (should be called Iriver Plus... something along those lines)
3. and away you go (just make sure you have your iriver connect to your computer)

just add those songs into the program and make sure they are transfered/in-sync with your iriver and it should be fine