basic cd-r's have 800 mb's of memory..so it all depends on how much music you have to put on 1 disc. I burn to a cd-rw because you can keep adding till full..then burn to a cd-r to finalize the disc..hope this helps bob
If the sum of both partial cd's is not greater than the max capacity of a cd (650 or 800 or 900 MB) then you' re able to fit 'em in one. Otherwise you have to compress the audio files (eg. to mp3 format) if your reader can reproduce other formats than cda. In case that the partial audio files of both cd's are not exceeding the total amount of the cd capacity you can use drag and drop feature in your burning machine (eg. in Nero) and create a new compilation. No need of special guides.