What are the relationships between Helix and Qtopia, Multimedia API and Media Player?

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Answer:

The relationships in Qtopia are as follows:

• Helix is a third-party multimedia engine integrated with Qtopia.
• The Qtopia Media API and QSound are abstractions for the underlying multimedia engine and sound device. It is possible for the Qtopia Media API (and QSound for audio) to play back media rather than communicating with the multimedia engine directly while the multimedia engine decodes and plays the media file.
• The Media Player is a user application shipped with Qtopia that supports user interactions to play sounds and videos.

Note: For Qtopia 4.1 and 4.2, Helix is the only supported multimedia engine.
See also: FAQ: "Can I play sound or video without Helix?"