Sustainability of Digital Formats
Planning for Library of Congress Collections
Sustainability of Digital Formats
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| Introduction | Sustainability Factors | Content Categories | Format Descriptions | Contact | |
| Full name | Module Music Formats (Mods) |
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| Description | A group of digital music file types produced by a variety of software applications called trackers. Mod files include sequencing information (similar to MIDI_SD) and waveform samples (generally PCM audio), and may be compared to XMF_1_0 files. Information about a variety of mod formats is linked from http://147.91.177.212/extra/fileformat/modules/index.htm; several mod file types are enumerated in File type signifiers, below. |
| Production phase | May be used by composers or arrangers for initial-state activities, in middle-state exchange of data or archiving, or for final-state, end-user delivery. |
| LC experience or existing holdings | None |
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| LC preference | None established at this time. XMF_1_0 is likely to be preferred to mods. |
| Disclosure | Little or no documentation. |
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| Documentation | None located at this time. |
| Adoption | Various types of mods are encountered on the web. One commentator writes, "Mods are extremely popular in the demo world and offer a way of making music of an acceptable level of quality rather cheaply." |
| Licensing and patents | None investigated by the compilers of this document. |
| Transparency | Unknown; may be relatively transparent. |
| Self-documentation | Unknown. |
| External dependencies | See MIDI_SD and DLS_1_1b. |
| Technical protection considerations | None known to the compilers of this document. |
| Sound | |
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| Normal rendering | Good support |
| Fidelity (high audio resolution) | Not applicable; fidelity depends upon the performance of external hardware and software. |
| Multiple channels | [Same as MIDI_SD ?] |
| Support for user-defined sounds, samples, and patches | Yes |
| Functionality beyond normal rendering | Not investigated at this time |
| Tag | Value | Note |
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| Filename extension | 669 amf dmf far it med mod mt2 mtm okt s3m stm ult wow xm |
From the list of extensions and associated tracker programs at www.modplug.com.
Additional signifier information for some mod types is provided in the following three-row sets. |
| Tag | Value | Note |
| Filename extension | 669 |
From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | application/playerpro |
For 669 (669 Tracker Module), from The File Extension Source. |
| Magic numbers | Hex: 4A 4E ASCII: JN Hex: 69 66 ASCII: if |
For 669 (669 Tracker Module), from The File Extension Source. |
| Tag | Value | Note |
| Filename extension | dmf |
From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | Not found. | Comments welcome. |
| Magic numbers | Hex: 44 44 4D 46 ASCII: DDMF |
For dmf (Delusion/XTracker Digital Music File), from The File Extension Source. |
| Tag | Value | Note |
| Filename extension | far |
From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | Not found. | Comments welcome. |
| Magic numbers | Hex: 46 41 52 FE ASCII: FAR |
For far (Farandoyle Tracker Music Module), from The File Extension Source. |
| Tag | Value | Note |
| Filename extension | it |
From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | audio/it |
For it (Impulse Tracker Music Module), from The File Extension Source. |
| Magic numbers | Hex: 49 4D 50 4D ASCII: IMPM |
For it (Impulse Tracker Music Module), from The File Extension Source. |
| Tag | Value | Note |
| Filename extension | med |
From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | application/soundapp audio/med audio/x-mod |
For med (Amiga MED/OctaMED Tracker Module Sound File), from The File Extension Source. |
| Magic numbers | Hex: 4D 4D 44 ASCII: MMD |
For med (Amiga MED/OctaMED Tracker Module Sound File), from The File Extension Source. |
| Tag | Value | Note |
| Filename extension | mtm |
From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | Not found. | Comments welcome. |
| Magic numbers | Hex: 4D 54 4D ASCII: MTM |
For mtm (MultiTracker Music Module), from The File Extension Source. |
| Tag | Value | Note |
| Filename extension | okt |
From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | application/soundapp |
For okt (Oktalyzer Tracker Module), from The File Extension Source. |
| Magic numbers | Hex: 4F 4B 54 41 53 4F 4E 47 43 4D 4F 44 ASCII: OKTASONGCMOD |
For okt (Oktalyzer Tracker Module), from The File Extension Source. |
| Tag | Value | Note |
| Filename extension | s3m |
From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | audio/s3m audio/x-s3m |
For s3m (ScreamTracker v3 Sound File), from The File Extension Source. |
| Magic numbers | Hex (position 25): 00 00 00 1A 10 00 00 |
For s3m (ScreamTracker v3 Sound File), from The File Extension Source. |
| Tag | Value | Note |
| Filename extension | xm |
From the list of extensions and associated tracker programs at www.modplug.com. |
| Internet Media Type | audio/xm audio/x-xm audio/module-xm audio/mod audio/x-mod |
For xm (Fast Tracker 2 Extended Module), from The File Extension Source. |
| Magic numbers | Hex: 45 78 74 65 6E 64 65 64 20 6D 6F 64 75 6C 65 3A 20 ASCII: Extended module: |
For xm (Fast Tracker 2 Extended Module), from The File Extension Source. |
| General | |
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| History |
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