Help recording lectures to CD-Rs?

[ThatOldGuy]

The files are in .mp3 format.

@MMMark

Wasn’t paying attention. You just told us that the files reside, not on your computer’s hard drive, but on a CD-R. Great.

You were closer to what I meant when you were not paying attention. The files are actually on my computer, not the CD-R, but I can see how you could infer as much from this:

I have two lectures that, together … take up only 20 MB on the CD-R.

It should say this:

I have two lectures that … [would] take up only 20 MB on the CD-R.

Thanks for the assistance, but I’m probably going to go with an audio jack. It seems like the easiest to do of all the options and it provides what I want.