The UK’s second-largest online music service 7 Digital today announced that sales through its online store had climbed 300 per cent since the introduction of DRM-free downloads from Warner Music through its UK service. “It is now clear that MP3 downloads represent the future for digital music.  With two of the four major labels now supporting MP3 in the UK, we expect to see the whole market supporting MP3 in the not-too-distant future,” said 7digital CEO Ben Drury. Appe’s DRM-free iTunes Plus service remains a contender within the online music space, yet offers no tracks from Universal, Sony BMG or Warner Music as yet. The three labels have refused to permit Apple a license to sell their catalogue free of rights restricting technologies. They have allowed iTunes competitors to do so in an attempt to undermine the Apple music service in order to foster a more competitive digital music ecosystem (and also, conceivably, to continue their long-term game plan of raising online music prices). Whether this is to the detriment of customers, Apple or otherwise, unprotected music sales online are becoming more popular as consumers grow to understand the significance of DRM-free music. “This format makes the digital music proposition simple for consumers with one universal format for all devices. Music lovers are beginning to realise that owning an iPod doesn’t mean just buying tracks from iTunes and, in fact, MP3’s are far superior in terms of compatibility,” Drury said. Apple may not be so short of cards in this game – September is the traditional launch point for new model iPods, and has been a focal point for iTunes service upgrades.