MP3s are identical to CDs in size, look, feel, and the way they play. The technical differences in recording format (compressed vs. uncompressed) essentially allow MP3s to hold more hours of audio sound than CDs. Thus, while a CD is typically limited to 80 minutes of audio sound, an equivalent MP3 can hold a range of hours at various levels of sound quality.

With respect to sound quality and associated compression factor, Spirit Enterprises uses an FM Radio equivalent standard of 64 kps to master its MP3s. By doing so, 15 or more hours can be recorded on a single MP3 without sacrificing the quality of sound.  In this way, an entire presentation of Genesis, consisting of 12 sessions (typically 100 minutes per session), can be recorded on one MP3. In stark contrast, it requires 23 CDs  to provide the same material.

Historically, MP3s have been around several years as one of the most prevalent means to store music off the Internet. Because of this history, the operating systems of nearly all home-based computers support playing MP3s as well as CDs. Playing MP3s or CDs off one's computer has several advantages that need to be experienced to be appreciated.

Since the year, 2000, electronic manufactures of home entertainment equipment, "boom boxes", and portable CD players have steadily increased their manufacturing of  these devices with MP3 compatibility. The "good news" is that you can now go to an electronic store like Fry's or Target and find that over 50% of the portable CD players or "boom boxes" have the MP3 compatibility symbol clearly marked on them. Prices, likewise, for MP3 compatible players have taken a dramatic turn for the better making purchases both desirable and affordable to the pocket-book.

For information on selecting an MP3 compatible player, please use  MP3 Players link provided.