MySQL:evite selecionar colunas com o mesmo ID de usuário

select r.* from ringtones r 
    inner join (select MIN(id) as id, userid from ringtones 
                      where deletedbyuser='0' and (lang='$lang' or lang='en') 
                      group by userid) s
    on r.id = s.id
order by r.id desc
limit 10