(and no, I haven't coverted it yet so it may very well be over 650 mb's... if so I didn't realize they were compressed down that much.)Yes it would be over the 80 minute mark, the playing time in the compressed mp3's and wmv's are the same time length when they are uncompressed. No need to apologize dear brother, this type of thing boggled me abit and still does. For recordings over 80 minutes you will have to split it to get them on 2 CD's. I like to split lets say a 84 minute recording into 2 palatable 42 minute clips. Unfortunaltely many of the older sermons are longer than 80 minutes, but thats a good thing right ;-)