Most CDs can hold about 70 minutes of audio without any problem. After that, I’ve heard of problems.
But did you know you can compress your audio file so longer recordings can fit onto a CD?
If you use just about any major audio editing software, you’ll see a tool that lets you compress audio.
However, be careful when you try this. If you compress too much, the file will drop words and sounds. If you’ve ever been on a bad cell phone call, you’ll know the feeling!
Barry Ackerman of GAC Recordings, a company that records live conferences and meetings, advises no more than a 7 percent compression to avoid problems. Of course, you should always sound check your work to make sure nothing was lost in the compression.
If you are running a minute or two over the normal CD length, this could be a neat trick to get all your recording to fit!