Enter CDLC, a portmanteau of "Custom DLC." This is the beating heart of the game's dedicated modding community. In short, Rocksmith CDLC refers to user-generated songs, created from scratch by fans, that allow you to play almost any song you can imagine within the Rocksmith 2014 engine. These files are not produced or endorsed by Ubisoft, the game's developer, but are a testament to the creativity and passion of the player base. They are essentially the "mods" of the Rocksmith world, taking a fantastic guitar-learning platform and transforming it into an infinite musical jukebox.
Ensure your custom song files end in _m.psarc (the designated file format for Mac architecture).
If Ubisoft releases an official Rocksmith DLC pack for a band, the custom community immediately takes down any matching CDLC versions. You must purchase official tracks to support the developers and music artists. CDLC exists purely to fill the gaps that official licensing leaves behind. Step-by-Step Guide to Enabling CDLC
Rocksmith allows users to learn and play their favorite songs on guitar or bass using a special cable and their instrument. The platform offers a vast library of songs, including many from well-known artists and bands.
This almost always means your D3DX9_42.dll file is missing, placed in the wrong folder, or was corrupted during a game update. Re-download the latest version of the patch and ensure it sits in the root folder next to the game's executable launcher.
This is essential. It helps you scan for broken songs, manage duplicate songs, fix missing DD, and update song audio volume to match official DLC.
If a custom song displays on your menu but freezes when you click "Play," you likely forgot to buy the official . Without it, the game cannot unlock the encryption key required to load the custom track. The Notes are Out of Sync
This is a known technical limitation. The Remastered update changed how the game handles song arrangements. If a CDLC has more than five different arrangements (e.g., Lead, Rhythm, Bass, Alternate Lead, etc.), the game may crash when trying to display them all. The only solutions are to avoid such CDLC or to use a tool like the Toolkit to remove the extra arrangements.
With over 60,000+ custom songs available (and counting), you can play anything from obscure metal bands to top 40 radio hits.
Rocksmith+ (the new subscription version) has and likely never will. So the CDLC feature remains a unique, powerful reason people stick with the older Rocksmith 2014 instead of upgrading.
This is the most critical requirement. The community uses the official Rocksmith DLC song "Cherub Rock" by The Smashing Pumpkins as a universal "key." The custom song files are coded to trick your game into thinking you are playing Cherub Rock. You must own this official DLC on Steam for CDLC to work.
