There are lots of sources for music online – an unexpected one which you might have missed is the British Council which supports Selector Radio and hosts a weekly show featuring live sessions, interviews and events raising awareness of UK music.
You can find the web site here:
www.selector-radio.com
Soundcloud sessions here:
www.soundcloud.com/britishcouncil
Facebook
www.facebook.com/SelectorRadio.BritishCouncil?fref=ts