Use the Microsoft Developer Network to search for errors that seem to defy explanation. VB4 comes with a short version of the MSDN, and subscriptions are available through Microsoft.

4 Areas of Your Company Where Your Audio Really Matters
Your company probably relies on audio more than you realize. Whether you’re creating a spoken text message to a colleague or giving a speech, you want your audio to shine. Otherwise, you could cause avoidable friction points and potentially hurt your brand reputation. For example, let’s say you create a