Music download service 7digital has redesigned its mobile site to enable owners of iOS devices browse, preview, purchase and listen to full versions of tracks without the need for an application.

Customers of 7digital can also access their 7digital Locker through the mobile site in order to listen to tracks and albums they have previously purchased.

The new 7digital mobile store is HTML5-compatible and has been launched alongside updated apps for Android and BlackBerry platforms.

The new Android app - version 1.5 - is free to download directly from the Android Market and requires Android 2.1 or higher. It adds the ability to play music stored on an SD card through the 7digital player, Last.fm scrobbling and an auto-resume feature if your downloads are interrupted by a loss of signal. The updated BlackBerry app adds support for the BlackBerry Touch 9800 and BlackBerry 9780 handsets.

7digital CEO Ben Drury said: "Our customers are increasingly demanding instant wireless access to the content that they own on all of their devices, be it a mobile or tablet. With the combination of apps and a new mobile store, we’re providing a great high quality music experience independent of device or operating system to meet these expectations."

7digital beat Apple to the launch of DRM-free music from all four major labels in September 2008 - iTunes couldn't make this claim until April 2009.

In March 2009 it teamed up with Spotify, offering users of the popular streaming service the chance to download the tracks they were listening to by clicking on a link in the Spotify client.

In October 2009 it launched a BlackBerry service, enabling owners of RIM's handsets to download music on the move at a lower bitrate, upgrading to 320kbps MP3 files when they logged on to Wi-Fi networks.

7digital claims to have a catalogue of around 12 million tracks.