I've never used an android-based phone, but iTunes purchases are in one of two formats: copy protected (.m4p) and DRM-free (.m4a). There is a Verizon page that lists the HTC Droid Incredible's supported audio formats and includes .m4a, so in theory you could copy those files from the "iTunes Library" folder onto the phone using whatever tools they have for loading music files in general (either copying in Explorer or through some special program - I don't know which is involved). The protected files will only work on an iPod or iPhone.