None that I know of. I had to do the same thing you did by hand with over 10,000 MP3's. Luckily all of those were backups and automatically got there own folder from Windows Media Player.
Intel Pentium IV 2.7GHZ with Hyper Thread, 4 Western Digital 120GB HDD, 1 Maxtor 60GB HDD, VisonTek GeForce 4MX 440, SBLive! Value, TDK 440N DVDRW, Memorex 52X CDRW, Lian Li Aluminum Case, Too Many Fanes, and Not enough POWER!!!
2001 Toyota MRS