ตัวแปลงไฟล์ออนไลน์ฟรี SOU เป็น OGG

An alias for the .u8 format

This format is free, which apparently is one of the reasons for its popularity. The used codecs supports variable bit rates (as a default), and .ogg files usually play back easily on all platforms. All things being equal, the sound quality exceeds that of mp3 somewhat.