This has nothing to do with podcast editing, but it does have everything to do with making your workstation a lot more fun.
How to change folder icons on a Mac:
1) Open the image you want to use and Command-C to copy
Note: Do not click on the image – just on the Preview pane of the image
2) Right-click the folder you want to change and “Get Info”
3) Click on the folder in the “Get Info” window
4) Command-V to paste the image onto the folder icon
To remove an icon, simply click on the folder icon in the “Get Info” window and hit Delete.