No Sequences will load

[FireController1847]

Every time I try to load a sequence, I'll either get this error in console,

Code:

XMLHttpRequest cannot load https://onlinesequencer.net/app/instruments/0.ogg?v=2. No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://onlinesequencer.net' is therefore not allowed access.

Or, I'll get this code,

Code:

Failed to load resource: the server responded with a status of 400 (Bad Request)

The bottom code happens with 8-bit sequences, and the top code happens to music sequences. I use this website all the time to make my songs, please help!