iTunes Signature Maker – this is a fantastic idea. A small online app (java I think) – that creates an audio signature based on your iTunes library.
The site suggests:
Load your iTunes signature onto your iPod, e-mail it to some friends, share it in our signature gallery, or stick it on your home page. Maybe it will help you gauge your compatibility with your next blind date: “She seems nice enough, but her iTunes signature is just so atonal!”
Really sweet. And I suppose you want to hear mine then. OK, here it is: Iain_Audio_Signature.mp3 (approx 200kb). The results could be better if you sat down and mixed it yourself, but hey ho, this is quick and easy!