This page uses MSE to concatenate several encoded fragmented MP4 (AAC) files into a gapless audio stream.
Based on Dale Curtis' excellent article, Media Source Extensions for Audio.
Currently, this plays gaplessly on Chrome, but has audible gaps on other MSE-enabled browsers.





Sine wave - 10 segments @ 1 seconds each



Sintel - 5 segments @ ~6.5 seconds each