wenmin juz came over and introduced me to this cool site, podOmatic, where you can create an account, upload and host voice files/podcasts for FREE.
juz created an account and took a look at some stats:
Storage and bandwidth
Bandwidth Quota: You have used 0 Bytes of 15 GB bandwidth allowed for the month
Reset Date: Your bandwidth quota will reset to zero on Fri Sep 15 20:39:10 PDT 2006.
Storage Quota: You are using 5.8 KB of 500 MB storage allowed.
500MB should allow a teacher/student to upload quite a number of voice recordings 🙂
check it out 🙂