Welcome here. First of all: Do not lose patience, accept to have to learn (not too much) and you will be rewarded with a fast and efficient system and more knowledge about Linux.
1. Read about the Moksha basics here, it is quick to be done what you would like to do: http://www.bodhilinu...htenment-guide/
2. Install Synaptic via Appcenter (use Midori!). Audacious is in the official repo (latest version 3.6 should work fine). I would not install any PPAs. If you can not withstand it, check the spelling to add a PPA. Important: run "sudo apt-get install ubuntu-restricted-extras" to get lots of useful codecs. This is almost what Mint does via "Welcome"-screen.
3. Install a system-monitor via using click on Applications>System Tools> Bodhi Appcenter. Why? The installation is somehow fixed to Midori. I have had the same problems at the beginning.
4. Dim your screen: click on the Menue, Settings> Settings Panel > Screen > Backlight. Or add a Module to your panel:
Settings> Modules> Utilities> Backlight (click on "Load").
You will see, that your Lenovo gets one or even two extra hours of battery life, because Bodhi is so efficient (ram usage, CPU).
Do not forget: run via terminal "sudo ufw enable" to enable your firewall.
Have fun with Bodhi.