Downloading consistently fails

[acatiadroid]

Downloading seems to fail at the point of retrieving audio from YouTube. Testing found that YouTube was sending back 403's instead.

My initial assumption was that this issue would be at the hands of the rusty_ytdl crate (which handles such procedures), as it was raised by someone else in Mithronn/rusty_ytdl#44. However, that Issue has been closed and the error persists.

The issue was also raised in nick42d/youtui#169.

From skimming it seems that a PO token is now required (see here) but I haven't properly verified that yet.