Rabbi Welcher on "Selichos and Prayer" can be downloaded here.
R' Moshe Schwerd on "Choose Life" can be downloaded here.
R' Uri Becker on "Fasting and Joy on Rosh Hoshana and the Flying Walendas" can be downloaded here.
Shiurim from past years:
Rabbi Welcher on Tekios on Rosh Hoshana - mp3 can be downloaded here.
Rabbi Welcher on Rosh Hoshana - Feasting or Fasting - mp3 can be downloaded here.
Rabbi Welcher on Fundamentals of Teshuva - mp3 can be downloaded here.
Rabbi Welcher on Halachos of Blowing Shofar can be downloaded here.
Rabbi Welcher on Approaching Teshuva - Wholesale or Retail - mp3 can be downloaded here.
Rabbi Welcher on Teshuva on Yom Kippur According to the Rambam and Rabbeinu Yonah - mp3 can be downloaded here.
Rabbi Welcher on Viduy on Yom Kippur - mp3 can be downloaded here.
R' Moshe Schwerd - Accessing Our Unique Tshuvah Opportunity can be downloaded here.
R' Moshe Schwerd on 3 Ways For A Favorable Judgment can be downloaded here.
R' Moshe Schwerd - How to Emerge from Judgment Victoriously can be downloaded here.
R' Moshe Schwerd on Understanding the Scope of Hashem's Judgement can be downloaded here.
R' Moshe Schwerd on Rosh Hoshana - Why Change is Possible can be downloaded here.
R' Yakov Haber on Rosh Hoshana and Hirhur Teshuva according to Rav Soloveitchik can be downloaded here.