[Kaitlyn2004]

Not sure if this is a Kodi thing or Addon, but I am on XBMC Frodo and Aeon MQ 5 skin.

Is there a way I can add a "Spotify" right on the main menu and have it either launch the website or the installed app on my computer?

[k4sh1n]

Google: kodi spotify addon
You should be able to add this to main menu through the custom menu and choose addon as the type.