If it annoys you too, regularly having to choose a different ring tone, because you get bored. Then Ring Random is just right for you. Start the app, select a folder that contains the sound files, adjust the desired time period im menu and start with "Start" on the timer. From now Ring Random changes your ringtone automatically in the given interval. Currently only supports mp3/ogg files.

A simple interface to search and download mp3 music from public domain via public search engines, all are free! you can search and download song from charts (by artist, by song), top artists songs.