When making an mp3 CD for playback in cars, regular players, etc., is one limited by the 74/80 minute time limit, or can you max out a disc's capacity? In playing around with it, it seems that you can make an mp3 data disc that can use all the disc's space, but can only be played on a PC or be used to transfer files. Making an audio disc seems to allow near-universal playback (depending on gear), but is limited to 74/80 minutes. Is this right, or am I missing something? Thanks.