The DLS computers have Garage Band installed and ready to use for your class or personal projects. You can also access Audacity for all sorts of audio editing, including podcast creation. If you want a higher level of control, Audition is available on the DLS computers through Adobe Creative Cloud.
Access Adobe Audition tutorials here.
You may want to look for music and audio to use on Academic Videos Online (AVON) or Kanopy, both of which are available through the library's databases. There are tutorials for accessing these databases in this guide.