Is this music legal to use in project

[impClaw]

Today i found this very good website (modplug.com). And there i found 2 songs that i really want to use in one of my projects, and theres no way to email the authors on that website, i wonder, is it legal to use the music in the project?

[Piezo]

If you use it and they get mad you can tell them it's their own fault for not saying you couldn't.

[myk]

Music Downloads Copyright Notice: All songs linked from MODPlug.com are protected by applicable Copyright Laws and International Treaties. As per these Laws, you may download these songs and make a reasonable number of copies of these songs only for your own personal use. Unauthorized use of these songs, including but not limited to: selling the music on a CD-ROM software collection disk, taping, burning or otherwise recording the music to analogue or digital tape, CD, MiniDisc or other audio media, broadcast of the music in any commercial broadcast (Television, Satellite, Cable, Radio or other means), using the music in a "demo", noncommercial broadcast without statement of authorship and origin of the song, and public performance is prohibited. If you do wish to use the music for any purpose but your own personal use, you should contact the author and/or the appropriate copyright holder(s). MODPlug Central will be happy to assist you in attaining these permissions, you may contact us at webmaster@modplug.com.

Using the music in a "demo" would seem to apply to game add-ons. So, email the webmaster.

[LorD BaZTArD]

Most likely. Given the use of "demo" in that clause, it's more than likely not referring to a game demo as something from the "demoscene". Ie: the guys that do insane music/animations in realtime using file sizes varying from 256 bytes to 64 Kilobytes and the larger scale demo which commonly has a ceiling of about 20MB.

My interpretation of that could be wrong though, however I think it is possible to use anysong from there within reasonable use. It's the reason why sites like that exist normally.

[myk]

An add-on is much more like a demo (or could be considered an amateur demo of ones game design skills using a prexisting engine) than a mere broadcasting. Or perhaps it's "worse" than a demo, since it's tied to a commercial game, while a demo could be much more independent.

Not to mention this:

If you do wish to use the music for any purpose but your own personal use, you should contact the author and/or the appropriate copyright holder(s). MODPlug Central will be happy to assist you in attaining these permissions, you may contact us at webmaster@modplug.com.

No matter what one does, if it isn't personal, they ask one to contact the authors. DOOM wads aren't personal if they are distributed.