Download iTunes (see Resources.) Install the program and open it.
Click “iTunes” and select “Preferences” if using a Mac. Click “Edit” and select “Preferences” if using a PC.
Click the “Import Using” button and select the “AAC Encoder” from the menu that opens. This will ensure that all files imported into iTunes will be converted to the AAC audio format.
Import the WMA lossless audio file into iTunes by clicking “File,” and then “Add to Library.”
Browse through your computer files and select the WMA lossless file. Then click “Choose" and the WMA lossless file will be imported into iTunes. Since the WMA format is not compatible with iTunes, it will immediately be converted to the AAC format.
Access this converted AAC file on a Mac by opening the Finder, clicking “Music,” selecting “iTunes” and then selecting “iTunes Music.” Access this converted file on a PC by clicking the Start button, selecting “Music,” selecting “iTunes” and then selecting “iTunes Music.”
Download Switch (see Resources.) Install and open the program.
Click “Add Files” and select the WMA lossless file that you would like to convert to AAC.
Select “AAC” as the “Output Format."
Click “Browse” and select an output location for the converted AAC file.
Click “Convert” and the WMA lossless file will be converted to AAC.
Download dBpoweramp (see the link in Resources.) Install the program and start it up.
Click “Browse,” and select the WMA lossless file that you would like to convert to AAC.
Select “AAC” as the “Converting To” format.
Click “Folder” and select an output location for the converted AAC file.
Click “Convert” and the WMA lossless file will be converted to AAC.