Playing music in C#

I'm trying to integrate music into my C# project. A few days ago, I've downloaded the DirectX 9.0c SDK from MS site. So far, I can play music using an instance of the Audio class (but it provides only the playback feature, nothing else) or using a SecondaryBuffer instance (provides a few effects on the playback, yet it only accepts Wave format files). But if I wanna play a...let's say MP3 file AND use effects, what do I do? It looks like DirectMusic is not provided within the SDK. Can anyone help?