Complex sentence: The album, which sounded very different from previous DMB albums, was the band's highest selling album to date, had a vocal group of fans on internet newsgroups which longed for the shelved sessions, which sounded more like the band they knew so well.
Split into simpler sentences: The album, which sounded very different from previous DMB albums, was the band's highest selling album to date. It had a vocal group of fans on Internet newsgroups which longed for the shelved sessions, which sounded more like the band they knew so well.