I have an upload phone app that uploads either images or audio recordings. The image can be uploaded to a mysql database and displayed no problem in a webpage, The problem i
This is a really really broad question, but here are some starter tips:
Look at the apache httpcomponents project for a good HTTP library, including the ability to do multi-part MIME attachments and POST requests
Take a look at the PHP docs for handling file uploads
If you don't want your app to lock up during uploads, I would encourage you to look at the android AsyncTask pattern and supporting classes so that your UI thread does not block during the uploads
There are any number of ways to play an audio file in a web page (Flash being the most prevalent probably)