There are several other data sources for the music industry, such as Big Champagne and Nielsen's Sound Scan and Broadcast Data Services. However, these sources are proprietary data (owned by the company) and must be purchased. Individual record labels also have data on albums and sales, but this too is proprietary.
The items below offer information on chart rankings, download data, and/or sales data.
Items labeled "Library Resource" are library subscriptions--you will need to use your NetID if trying to access them off campus.