Need a favour!

For both audio and video
songslover.com

For audio songs
downloads.nl

For video songs
tubidy.com
cellsea.com
youtube

I never made one before but Ive herd somethings about it!
ITunes
Sorry if this doesnt help!

go on Google and type in selena gomez and it will give あなた 音楽 videos.

the best place it あなた tube! ;D

I normally use a site called Zamzar. あなた need to go onto YouTube to copy the URL of the song または 音楽 video of your choice. Then あなた paste the URL in zamzar then あなた decided what あなた want to convert it to. (You'll have a lot of choices) Then it will send あなた an email. あなた click on the link and あなた download :)
I hope this helps あなた :)