Since the advent of radio, MTV and the iPod, personalized playlists and hit singles have taken precedence over the once popular trend of listening to an album as a whole. A recent trend, however, seems to suggest that the album as an art form is coming back. Last month, Steely Dan played a different classic album each night during three back-to-back concerts in San Francisco. This month, Sacramento music fans will be able to hear three classic albums in their entirety: Wednesday, Todd Rundgren will play his 1973 album, A Wizard, A True Star at the Crest Theatre; Saturday, a handful of Sacramento bands will play The Clash's 1979 album London Calling at Old Ironsides; Saturday, Dec. 12, Th