message: fixing case where buffer is not set
  previously would prefix "/"
diff: @@ -373,7 +373,7 @@ export class ToneAudioBuffer extends Tone {
  }
  // make sure there is a slash between the baseUrl and the url
  - const baseUrl = ToneAudioBuffer.baseUrl.endsWith("/") ? ToneAudioBuffer.baseUrl : ToneAudioBuffer.baseUrl + "/";
  + const baseUrl = ToneAudioBuffer.baseUrl === "" || ToneAudioBuffer.baseUrl.endsWith("/") ? ToneAudioBuffer.baseUrl : ToneAudioBuffer.baseUrl + "/";
  const response = await fetch(baseUrl + url);
  if (!response.ok) {
  throw new Error(`could not load url: ${url}`);
  