the DJ's name is Adam Goldstein so AM is short for Adam
Disk Jockey Disk Jockey
Disk Jockey. =). In the "olden days," radio stations played music from vinyl records on turn tables. These were alternatively called disks. So, the disk jockey was the one who "jockeyed" the disks...
Disc Jockey
A disk jockey is a person who plays records for a dance or a party. The art consists in selecting the records to please the crowd.