 Third-party reviews found that Nitrane had bugs that resulted in playing back MP3s incorrectly, and that this resulted in unstable tones being added to the playback, and undoubtedly therefore violated the ISO standard.This also means that Nitrane was unlikely to have been based on the AMP software, and was more likely evidence of a hastily written MP3 decoder that didn't concern itself with standards compliance.Version 1.90, released March 31, 1998, was the first release as a general-purpose audio player, and documented on the Winamp website as supporting plugins, of which it included two input plugins ("MOD" and "MP3") and a visualization plugin.