I'm frankly rather suprised that this hasn't been brought up before. Seems more likely that my searching simply failed miserably, but ah well.
It seems to me that what OCR, and indeed myself, are doing is in violation of copyright law. I'm sure that the idea of "fair use" has been brought up more than once, but I'm not sure it really applies unless you're making a Weird Al-style tune (that would be parody, which is explicitly mentioned under Fair Use law.). Are my suspicions correct? i've done a slight amount of research on the subject, and it seems to point towards "yes".
The reason I'm asking is because I'm making the OST for a role-playing game called Netland, which is a crossover-type deal.The songs are mostly remixes of songs from their source material, much like OCR songs except not nearly as good.I'm looking for a place to upload them, but I don't want to get myself or the hosting site in trouble for breaking copyright.
Also, on the subject, what are the legal and ethical implications of using MIDIs downloaded from sites such as VGMusic for remixing? I obviously don't directly copy MIDIs (well, actually I do, but only for personal listening; I don't plan to publish any of it), but oftentimes I'll break down the MIDI tune into its component chord progressions and mix them differently. I think that there's enough change there (30 minutes of work, usually) to justify releasing it (for free, of course) under my own name.