Try dir2ogg. It converts many formats to ogg.
$ man dir2ogg
- [Trisquel-users] Converting to OGG franparpe
- Re: [Trisquel-users] Converting to OGG franparpe
- [Trisquel-users] Antwort: Converting to... shiretoko
- Re: [Trisquel-users] Converting to OGG gnuser
- Re: [Trisquel-users] Converting to ... franparpe
- Re: [Trisquel-users] Converting... gnuser
- Re: [Trisquel-users] Converting... Ivaylo Valkov
- Re: [Trisquel-users] Converting to OGG jbar
- Re: [Trisquel-users] Converting to OGG george . standish
- Re: [Trisquel-users] Converting to ... franparpe
- Re: [Trisquel-users] Converting... Alexander Stephen Thomas Ross
- Re: [Trisquel-users] Converting to OGG franparpe
- Re: [Trisquel-users] Converting to ... gnuser
- Re: [Trisquel-users] Converting... franparpe
- Re: [Trisquel-users] Converting to OGG teodorescup
- Re: [Trisquel-users] Converting to OGG younglacey
