Use auditing tools like ClrMamePro or RomCenter to scan your downloaded torrent folder against official MAME datfiles to fix any missing or renamed zips. If you need help setting up your emulator, let me know:
What are you planning to run MAME on?
Download an open-source, ad-free torrent client such as or Transmission . Avoid clients bundled with adware. Step 3: Load the Torrent and Filter torrent mame extra quality full set roms link