What are some alternatives?
When comparing Premiumbeat.com and istockphoto.com iStockaudio, you can also consider the following products
AudioJungle - Discover 637399 Royalty Free Music tracks and audio files from only $1 on AudioJungle. Buy Royalty Free Music from a Global Community of Musicians and Sound Engineers.
Free Music Archive - Interactive library of high-quality, legal audio downloads
Filmstro - The world's first soundtrack creation studio
ccMixter - ccMixter is a community remix site operated by ArtisTech Media, created by Creative Commons
Audio Network - Royalty Free Music library.
Jukedeck - Create unique music for your videos in seconds.