Complex sentence: On 18 December 2008 the Orchestra announced the creation of a Digital Concert Hall: this new Internet platform will enable music fans all over the world to see and hear the Philharmonic's concerts--live or on demand.
Split into simpler sentences: On 18 December 2008 the Orchestra announced the creation of a Digital Concert Hall. The new internet platform will enable music fans all over the world to see and hear the Philharmonic's concerts--live or on demand.