Instaud.io is described as 'Share audio files quickly and easily'. There are six alternatives to Instaud.io, not only websites but also apps for a variety of platforms, including iPhone, Android Tablet, iPad and Android. The best alternative is SoundCloud, which is free. Other great sites and apps similar to Instaud.io are Radio4000 (Free, Open Source), Clyp (Paid), Vocaroo (Free) and Chirbit (Free).
Chirbit is a useful and fun tool that enables you to record, upload and share your voice or audio files easily. Record your voice using a webcam or microphone connected to your computer, or upload an existing audio file.
CD Baby, Inc. is an online music store specializing in the sale of CDs, vinyl records, and music downloads from independent musicians to consumers. The company is also a digital aggregator of independent music recordings, distributing content to several online music retailers.