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MP3 Tutorial by Steve Dalton

(Presented at the December 2008 meeting of the Oak Point Computer Club)




Frame1

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TUTORIAL

To encode mp3 files is more complicated than playing them back, since it involves 2 discrete stages:

If you have a CD you wish to convert to mp3 format, you will need "CD ripper" software.

Amid the confusion of this technological revolution we can't afford to lose track of what's legal and what's not. Record companies are serving papers to individual audio pirates left and right (record companies also still sue other companies, don't forget). Luckily for those who create their own music, the laws are quite simple.

You have every right to encode your own composition to .mp3 format and distribute it on the Internet. Just make sure that you solely own the rights and permissions to the composition.

It is also legal to encode MP3s of music that you've bought for personal use for home listening, but it's illegal to give anyone copies. Do not upload such MP3s to a publically accessible webserver.

For answers to further questions about the MP3 technology, piracy, and copyright infringement, read MP3: Ethical and Legal Issues on Webmonkey. For discussion of formats and technical issues, join the Technology mailing list.











Comparison Chart - MP3 Players

MP3 player and price*

Internal memory

Connection, battery

Formats supported

System compatibility, warranty, other features

Apple iPod nano

Where to Buy

8 GB, *Est. $200

8 GB

4 GB version available (*est. $150)

USB 2.0 cable (included), built-in rechargeable lithium battery, dock adapter.

MP3, AAC (proprietary), WAV, AIFF, JPEG, MPEG4

Mac or PC; PC must use Windows Vista or XP Home or Professional with Service Pack 2 or later. Both must have a built-in USB 2.0 port.

iTunes 7.4 or later. 2-inch LCD color screen with 320 x 240 pixel resolution at 204 pixels per inch. 1.74 ounces. One-year limited warranty.

Creative Zen V Plus

Where to Buy

4 GB, *Est. $90

4 GB

2 GB (*est. $70)

USB 2.0, Li-ion battery

MP3, WMA, IMA ADPCM, WMA DRM

PC only.

Backlit color LCD, voice recorder, line-in recording (cable included), FM tuner with recording capability, video playback. Can be used to store data files, drag/drop files. 1.55 ounces. One-year warranty.

iRiver Clix

Where to Buy

8 GB, *Est. $230

8 GB

4 GB (*est. $165)

USB 2.0 cable included, internal Li-poly rechargeable battery

MPEG 1/2/2.5 Layer 3 (MP3), WMA, ASF, OGG, MPEG-4 (QVGA, 15fps), Macromedia Flash Player, TXT, nonprogressive JPEG

Requires Windows Media Player v. 10+.

2.2-inch screen supporting 260,000 colors for viewing photos and videos, supports ID3 tags. FM tuner, integrated voice recorder. Plays downloadable games, supports music subscription services and has alarm clock. 2.4 ounces. One-year warranty.

Apple iPod classic

Where to Buy

80 GB, *Est. $245

80 GB

160 GB version also available (*est. $330)

USB 2.0 cable included, built-in rechargeable lithium battery

MP3, AAC (proprietary), WAV, AIFF, Audible.com (text), JPEG, GIF, BMP, PNG, MPEG-4 (video), H.264 (video)

Mac or PC; PC must use Windows Vista or Windows XP Home or Professional with Service Pack 2 or later and have a USB 2.0 port.

2.5-inch LCD color screen. Can be used as portable hard drive and to store contact info. Earphones, AV out (cable not included), AC adapter optional (charges through computer). 5.7 ounces. One-year warranty.

Microsoft Zune

Where to Buy

80 GB, *Est. $250

80 GB

4 GB (*est. $140) and 8 GB (*est. $170) flash versions also available

USB 2.0, Li-ion battery

AAC (unprotected), MP3, WMA, JPEG. MPEG4, WMV

PC only, Microsoft Windows Vista Premium or Ultimate.

3.2-inch display screen (flash versions: 1.8-inch screen), FM tuner, Wi-Fi sharing and sync. 4.5 ounces (flash versions: 1.7 ounces). One-year warranty.

Samsung YP-U3

Where to Buy

2 GB, *Est. $70

2 GB

USB 2.0, Li-ion battery

MP3, WAV, WMA

PC only, Microsoft Windows XP, Microsoft Windows Vista.

1-inch display screen, FM tuner, voice recording capability. 0.8 ounces. One-year warranty.































CD ripper

From Wikipedia, the free encyclopedia

Jump to: navigation, search

A CD ripper, CD grabber or CD extractor is a piece of software designed to extract or "rip" raw digital audio (in format commonly called CDDA) from a compact disc to a file or other output

Introduction

ripperX for GNU/Linux

As an intermediate step, some ripping programs save the extracted audio in a lossless (but possibly compressed format) such as WAV, FLAC, or even raw PCM audio.

The extracted audio can then be encoded with a lossy codec like MP3, Vorbis, WMA or AAC. The encoded files are more compact and are suitable for playback on digital audio players. They may also be played back in a media player program on a computer.

Most ripping programs will assist in tagging the encoded files with metadata. The MP3 file format, for example, allows tags with title, artist, album and track number information. Some will try to identify the disc being ripped by looking up network services like AMG's LASSO, FreeDB, Gracenote’s CDDB, GD3 [1] or MusicBrainz, or attempt text extraction if CD-Text has been stored.

Some all-in-one ripping programs can simplify the entire process by ripping and burning the audio to disc in one step, possibly re-encoding the audio on-the-fly in the process.

Mac OS

Windows




Sample Screen using Windows media player to RIP CD









Sample Screen using Itunes to RIP CD







Sample Screen using Nero Express to RIP CD




The Audio CD can be automatically identified with Gracenote MusicID. So called metadata such as title, genre, and track title are accessed by the Gracenote Media Database and associated to the tracks. That way you have audio files that are accurately and fully named after the encoding process.

Music recognition technology and related data are provided by Gracenote. Gracenote is the industry standard in music recognition technology and related content delivery. For more information, please visit www.gracenote.com.

Audio files from copy-protected Audio CDs cannot be saved.



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