If you would like to use the CD you received from the studio EXACTLY as it is, I recommend you use our Master Uploader Application. A link to download this app will be provided when assembling your project.
If you would only like to use a portion of the CD you may to convert your tracks to a digital audio format such as WAV, MP3, AIFF, FLAC and upload the desired tracks.
Please note that attempting to upload a track directly from your audio CD, without converting to one of these formats first, results in a .CDA file being uploaded which does NOT contain any audio data.
You can read how to convert your audio CD to WAV files for uploading here.