Great product. I use it to combine my Surface tablet's audio with my PCs audio. Combined with software such as Mouse Without Borders or Synergy both devices are more or less combined.
The one downside is the male connector. While useful for splitting audio into 2 devices, it makes it difficult to plug in headphones or to speakers with a non-removable AUX input. If it were 3 female AUX jacks, it would be much more versatile as a simple aux cable could be used to provide a male connector. I've ordered a (difficult to find) f-f connector, but while its disappointing to see, it's still cheaper than combining audio using a mixer.