Some free music icons designed by Tim Parker. This set includes a speaker, headphones, play button,CD, et cetera.
iOS icon pack is a PSD freebie containing icons for google +, paypal, subatomic studios, youtube, linkedin, google buzz, apple, android.
iOS free PSD icon pack
Dark UI kit containing sliders, search field, checkboxes, radio buttons, buttons, tags, et cetera. PSD freebie created by Lukas Troup.