The song - a cover of Unsteady originally by X AMBASSADORS - was performed live on last night's final show and is currently at Number 3 on iTunes at the time of writing.
It's not technically a winner's single and it remains to be seen if it it will appear in the Official Charts this week.
Nevertheless, you can download or stream Mo's song online here.
Rather than a proper winner's song, this year the show has instead decided to release a full winner's EP which will be out by the end of the month.
Bosses are determined to change the fortunes of this year's winner by sending Mo straight in to the studio having signed a record deal with Polydor.
Mo's mini album is expected to be out in time for Easter.
ITV will also be doing its bit to help promote their efforts by featuring them in a 'Winner's Story' special.
The one-off programme will be broadcast around the same time the EP is made available to purchase, expected to be Easter Sunday.
Meanwhile, speaking on ITV's Good Morning Britain today about his experience on the show, Mo said: "I'm really relieved, really happy. The whole experience was amazing."
Just a few hours after his victory, he added: "It still hasn't sunk in. I was kind of in a state of shock really, like 'are you sure?'. I'm over the moon and I'm so happy."