I don't think so, because I use .wav files with sox and Garmin 3760T. I also tried another newer version of sox.exe, but that didn't work at all.
I haven't done this for a few years now but I believe that the newer nuvis use MP3 while the older units use WAV. I'd to do a WAV-to-MP3 conversion, and it needed to be a certain bitrate. Might want to Google, check, and try...
Bookmarks