Even if you loose your iPod, there is no need of worry as you can download the app iPod and visualize all your music from there. You can easily add your favorite music to your playlist or browse by genre. With the iPad and Apple TV, you can wirelessly transmit the music and listen it from there, airplay speakers also support the transmitting function. The airport express isn’t included with the iPad but if you but it then you can also stream it there.
The iPad 2 does support multi-tasking so you can surf the web while listening to music.