Complex sentence: The frequency change finally occurred on February 10,2008, although when this happened, nothing was airing on 90.7, except for a pre-recorded message by Gordon Brown stating that XLNC1 had moved to 104.9 FM.
Split into simpler sentences: The frequency change finally occurred on February 10,2008. At first, the 90.7 frequency aired pre-recorded message by Gordon Brown stating that XLNC1 had moved to 104.9 FM.