So, you thought you’d heard everything about what the Wii can do? Well, we’ve found some new interesting tidbits, and we’re willing to bet (based on what we’ve found out so far) that there’s still more up Nintendo’s seemingly bottomless sleeves.

The most recent revelation is that the Wii will support mp3 playback (that’s MPEG-3 Audio format, not Metroid Prime 3, of course). While details are of course sketchy, it seems that the playback will at least be enabled during slideshows played through the Photo Channel. Straight from the most recent “Iwata Asks” write-up:

“Another thing which people have really enjoyed is the Slide show function. This allows you to play music as the console automatically displays your pictures in turn. If you put MP3 files in your SD Card, you can have your favourite songs as background music to your Slide show.”

Does this mean that you’ll be able to include your own music during games (much like the Xbox 360’s current capabilities?). It certainly sounds like it. And especially given the fact that the Wii has an upgradeable, possibly Linux-based operating system, there’s definitely the possibility that Nintendo could even implement this feature at a later date.

As usual, we’ll keep you updated with all the latest rumors. But goodness - it’s 5 weeks until launch - shouldn’t we be running out of rumors already??!?