i just tried uploading a new song, but it failed with
external_client_failure
on both the Album art and Audio file
then it hangs there with the button displaying
Saving... Please be patient

i tried a couple of times, and then relaunched my browser and tried again. no luck.

this has worked for me in the past. as far as i know nothing has changed on my computer.

let me know if i can provide more info to help solve this!

thank you