Avee Music Player Pro

In essence, a lightweight music player that also has folder browsing, equalizer, song cross-fading and video playback capability.

Still, most notable features are audio visualizer and easy HD video production.
While all visualizers are extensively customizable - color / shape / size / audio reaction / your own picture and more tweaks.

You can also import and export visualizer templates as files and find various cooler versions than default ones shared online.