Ubuntu 14 is mostly considered end of life, please keep this in mind when seeking support.

Firstly, lets install the dependencies required for your system:

# Install build tools
sudo apt-get install build-essential unzip -y
sudo apt-get install software-properties-common -y
 
# Add external repositories
sudo add-apt-repository ppa:deadsnakes/ppa -y
sudo add-apt-repository ppa:mc3man/trusty-media -y
sudo add-apt-repository ppa:chris-lea/libsodium -y
 
# Install system dependencies
sudo apt-get update -y
sudo apt-get install git python3.6 libav-tools libopus-dev libffi-dev libsodium-dev -y
sudo apt-get upgrade -y
 
# Install pip
curl https://bootstrap.pypa.io/get-pip.py -o get-pip.py
python3.6 get-pip.py
 
# Clone the MusicBot to your home directory
git clone https://github.com/Just-Some-Bots/MusicBot.git ~/MusicBot -b master
cd ~/MusicBot
 
# Install Python dependencies
sudo python3.6 -m pip install -U pip
sudo python3.6 -m pip install -U -r requirements.txt 

After running those commands, you can configure the bot and then run it using:

./run.sh