• M = Master
•  
• A = Audience
• S = Soundboard
• FM = Radio broadcast
• PreFM = Pre-radio broadcast
• TV = TV broadcast
• XM = Satellite radio broadcast
• webstream = Stream over the internet
• DVB-C = Digital Video Broadcast - Cable
• DVB-S = Digital Video Broadcast - Satellite
•  
• C = cassette
• R = reel-to-reel tape
• D = Digital recording (DAT, hard drive, etc)
• MD = Minidisc
• VHS = VHS tape
• PCM = PCM recording
• T = tape (unknown media)

I strongly prefer e-trades; I have an FTP server.