I got this midi file from wap, downloaded to my phone. The problem is, this MIDI can be played on my Nokia 6600 and according to Nokia, the phone can support these formats: - MIDI, audio/midi, *.mid - SP-MIDI, audio/sp-midi, *.mid - AMR, audio/amr, *.amr - AMR-WB, audio/amr-wb, *.awb - WAV, audio/x-wav, *.wav - RMF, audio/rmf, *.rmf - AU, audio/basic, *.au However, when i backup the file to my PC (the extension is .mid), it can't be played on my player (WMP, winamp, etc). While I don't have any problem playing other MIDI files, is there anyway some sequencers especially ringtone developers create a protective feature where you can't play the MIDI files on PC? Or is this simply not a MIDI file? Thanks for your assistance!