Problems with putting the song on my phone

Today, I have tried to put the song on my phone so when it comes to filming tomorrow, I can play the song while filming so Ellie could lip sync to it. However, I have problems with putting it on my phone as I can't connect my phone to the computer and can't download it on. This means I would need to rely on Ellie and use her phone to play the song in filming. I have used her phone and when playing the song on her phone, it is loud enough to hear so when it comes to filming she would be able to hear it and lip sync to the song. Hopefully, she could play the song on her phone either by having it on her phone or playing it on YouTube.