Here are five ideas for Sefira themed ring tones. (For those who don't know, the theme is counting).
1. Rikki Don't Lose that Number (Steely Dan)
2. Counting the Beat (The Swingers)
3. Count on Me (Bruno Mars)
4. Colour by Numbers (Culture Club)
5. Higher Ground (Stevie Wonder)
Obviously you would need to find acapella versions of these songs (if you are stringent about not listening to music on ringtones either). Also, if you click on the youtube links there is a chance that you will hear music (on youtube). You have been warned.