For those of you who use Virtual Radar Server, I have published the necessary files to add sectional, WAC, TAC, and enroute charts to VRS. Unfortunately this is US-only because charts do not seem to be as readily available in the public domain in other regions. These charts are sourced from and courtesy of chartbundle.com.
https://github.com/ProHill/VRS-Charts
Enjoy, and let me know if you have any problems!
Andy