I recently installed some beta music player which seems to have removed the file assocation for MP3 files. Now when I click on an MP3 from inside the File Explorer I get a message about the it not being signed or one of it's components is missing.

Not really a huge issue for me since I don't use my phone to listen to music much...but a side effect of this file association problems is that now my phone won't play any MP3 ringtones.

I've hunted around and can't find a setting to make WMP the default MP3 player so I'm guessing it might be a registry setting...but I did a search here and couldn't find anything.

Anyone know where the setting or which key I need to set?

I think you can do it within the registry, but alas I can't point you in the right direction however you can give this a go

FreewarePPC.com - Freeware Pocket PC / Freeware Windows Mobile: myExtensions v1.1.0

that should do the trick, and it's free.

Disco! That did it...thanks for the link....MP3 ringtones are working again!